14 Ye are my friends, if ye do whatsoever I command you.
[AD 407] John Chrysostom on John 15:12-16
(Hom. lxxvii. 1) All things, i. e. all things that they ought to hear. I have heard, shows that what He had taught was no strange doctrine, but received from the Father.

[AD 430] Augustine of Hippo on John 15:12-16
(Tract. lxxxiii. 3) Where then love is, what can be wanting? Where it is not, what can profit? But this love is distinguished from men's love to each other as men, by adding, As I have loved you. To what end did Christ love us, but that we should reign with Him? Let us therefore so love one another, as that our love be different from that of other men; who do not love one another, to the end that God may be loved, because they do not really love at all. They who love one another for the sake of having God within them, they truly love one another.

(Tract. lxxxvi. 1) Having said, This is My commandment, that ye love one another, even as I have loved you, it follows, as John saith in his Epistle, that as Christ laid down His life for us, so we should lay down our lives for the brethren. (1 John 3) This the martyrs have done with ardent love. And therefore in commemorating them at Christ's table, we do not pray for them, as we do for others, but we rather pray that we may follow their steps. For they have shown the same love for their brother, that has been shown them at the Lord's table.

(viii. de Trin. c. viii) From one and the same love, we love God and our neighbour; but God for His own sake, our neighbour for God's. So that, there being two precepts of love, on which hang all the Law and the Prophets, to love God, and to love our neighbour, Scripture often unites them into one precept. For if a man love God, it follows that he does what God commands, and if so, that he loves his neighbour, God having commanded this. Wherefore He proceeds: Ye are My friends, if ye do whatsoever I command you.

(Tract. lxxxv. 2) Great condescension! Though to keep his Lord's commandments, is only what a good servant is obliged to do, yet, if they do so, He calls them His friends. The good servant is both the servant, and the friend. But how is this? He tells us: Henceforth I call you not servants, for the servant knoweth not what his Lord doeth. Shall we therefore cease to be servants, as soon as ever we are good servants? And is not a good and tried servant sometimes entrusted with his master's secrets, still remaining a servant? (c. 3.). We must understand then that there are two kinds of servitude, as there are two kinds of fear. There is a fear which perfect love casteth out; which also hath in it a servitude, which will be cast out together with the fear. And there is another, a pure (castus) fear, which remaineth for ever. It is the former state of servitude, which our Lord refers to, when He says, Henceforth I call you not servants, for the servant knoweth not what his Lord doeth; not the state of that servant to whom it is said, Well done, thou good servant, enter thou into the joy of thy Lord: (Matt. 25:21) but of him of whom it was said below, The servant abideth not in the house for ever, but the Son abideth ever. Forasmuch then as God hath given us power to become the sons of God, so that in a wonderful way, we are servants, and yet not servants, we know that it is the Lord who doth this. This that servant is ignorant of, who knoweth not what his Lord doeth, and when he doeth any good thing, is exalted in his own conceit, as if he himself did it, and not his Lord; and boasts of himself, not of his Lord.
But I have called you friends, for all things that I have heard of My Father, I have made known unto you.

(Tract. lxxxvi. 1) But how did He make known to His disciples all things that He had heard from the Father, when He forebore saying many things, because He knew they as yet could not bear them? He made all things known to His disciples, i. e. He knew that He should make them known to them in that fulness of which the Apostle saith, Then we shall know, even as we are known. (1 Cor. 13:12) For as we look for the death of the flesh, and the salvation of the soul; so should we look for that knowledge of all things, which the Only-Begotten heard from the Father.

(Tract. lxxxvi. 3) Ineffable grace! For what were we before Christ had chosen us, but wicked, and lost? We did not believe in Him, so as to be chosen by Him: for had He chosen us believing, He would have chosen us choosing. This passage refutes the vain opinion of those who say that we were chosen before the foundation of the world, because God foreknew that we should be good, not that He Himself would make us good. For had He chosen us, because He foreknew that we should be good, He would have foreknown also that we should first choose Him, for without choosing Him we cannot be good; unless indeed he can be called good, who hath not chosen good. What then hath He chosen in them who are not good? Thou canst not say, I am chosen because I believed; for hadst thou believed in Him, thou hadst chosen Him. Nor canst thou say, Before I believed I did good works, and therefore was chosen. For what good work is there before faith? What is there for us to say then, but that we were wicked, and were chosen, that by the grace of the chosen we might become good?

(de Prad. Sanct. c. xvii.) They are chosen then before the foundation of the world, according to that predestination by which God foreknew His future acts. They are chosen out of the world by that call whereby God fulfills what He has predestined: whom He did predestinate, them He also called. (Rom. 8:30)

(Tract. lxxxvi. 3) Observe, He does not choose the good; but those, whom He hath chosen, He makes good: And I have ordained you that ye should go, and bring forth fruit. This is the fruit which He meant, when He said, Without Me ye can do nothing. He Himself is the way in which He hath set (ἔθηκα, posui) us to go.

(Tract. lxxxvi. 3) Love then is one fruit, now existing in desire only, not yet in fulness. Yet even with this desire whatever we ask in the name of the Only-Begotten Son, the Father giveth us: That whatsoever ye shall ask the Father in My name, He may give it you. We ask in the Saviour's name, whatever we ask, that will be profitable to our salvation.

[AD 604] Gregory the Dialogist on John 15:12-16
(Hom. xxvii. in Evang.) But when all our Lord's sacred discourses are full of His commandments, why does He give this special commandment respecting love, if it is not that every commandment teaches love, and all precepts are one? Love and love only is the fulfilment of every thing that is enjoined. As all the boughs of a tree proceed from one root, so all the virtues are produced from one love: nor hath the branch, i. e. the good work, any life, except it abide in the root of love.

(Hom. xxvii.) The highest, the only proof of love, is to love our adversary; as did the Truth Himself, who while He suffered on the cross, showed His love for His persecutors: Father, forgive them, for they know not what they do. (Luke 23:34) Of which love the consummation is given in the next words: Greater love hath no man than this, that a man lay down his life for his friends. Our Lord came to die for His enemies, but He says that He is going to lay down His life for His friends, to show us that by loving, we are able to 1 gain over our enemies, so that they who persecute us are by anticipation our friends.

(Hom. xxvii.) But whoso in time of tranquillity will not give up his time to God, how in persecution will he give up his soul? Let the virtue of love then, that it may be victorious in tribulation, be nourished in tranquillity by deeds of mercy.

(xxvii. Moral.) A friend is as it were a keeper of the soul. He who keeps God's commandments, is rightly called His friend.

(Hom. xxvii.) Or all things which He heard from the Father, which He wished to be made known to His servants; the joys of spiritual love, the pleasures of our heavenly country, which He impresses daily on our minds by the inspiration of His love. For while we love the heavenly things we hear, we know them by loving, because love is itself knowledge. He had made all things known to them then, because being withdrawn from earthly desires, they burned with the fire of divine love.

(Hom. in Evang. xxvii.) But let no one who has attained to this dignity of being called the friend of God, attribute this superhuman gift1 to his own merits: Ye have not chosen Me, but I have chosen you.

(Hom. xxvii.) I have set you,i. e. have planted you by grace, that ye should go by will (volendo not in Vulg.); to will being to go in mind, and bring forth fruit, by works. What kind of fruit they should bring forth He then shews: And that your fruit may remain: for worldly labour hardly produces fruit to last our life: and if it does, death comes at last, and deprives us of it all. But the fruit of our spiritual labours endures even after death; and begins to be seen at the very time that the results of our carnal labour begin to disappear. Let us then produce such fruits as may remain, and of which death, which destroys every thing, will be the commencement.

[AD 1107] Theophylact of Ohrid on John 15:12-16
Having said, If ye keep My commandments, ye shall abide in My love, He shows what commandments they are to keep: This is My commandment, That ye love one another.

As if He said, The servant knoweth not the counsels of his lord; but since I esteem you friends, I have communicated my secrets to you.

[AD 215] Clement of Alexandria on John 15:14
Now sinners are called enemies of God—enemies, that is, of the commands that they do not obey, just as those who obey become friends. The latter are named so from their fellowship; the former from their estrangement, which is freely chosen. For there is neither enmity nor sin without the enemy and the sinner.

[AD 258] Cyprian on John 15:14
There is then no reason, dearest brother, for any one to think that the custom of certain persons is to be followed, who have thought in thee past that water alone should be offered in the cup of the Lord. For we must inquire whom they themselves have followed. For if in the sacrifice which Christ offered none is to be followed but Christ, assuredly it behoves us to obey and do that which Christ did, and what He commanded to be done, since He Himself says in the Gospel, "If ye do whatsoever I command you, henceforth I call you not servants, but friends." And that Christ alone ought to be heard, the Father also testifies from heaven, saying, "This is my well-beloved Son, in whom I am well pleased; hear ye Him." Wherefore, if Christ alone must be heard, we ought not to give heed to what another before us may have I thought was to be done, but what Christ, who is before all, first did. Neither is it becoming to follow the practice of man, but the truth of God; since God speaks by Isaiah the prophet, and says, "In vain do they worship me, teaching the commandments and doctrines of men." And again the Lord in the Gospel repeals this same saying, and says, "Ye reject the commandment of God, that ye may keep your own tradition." Moreover, in another place He establishes it, saying, "Whosoever shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven." But if we may not break even the least of the Lord's commandments, how much rather is it forbidden to infringe such important ones, so great, so pertaining to the very sacrament of our Lord's passion and our own redemption, or to change it by human tradition into anything else than what was divinely appointed! For if Jesus Christ, our Lord and God, is Himself the chief priest of God the Father, and has first offered Himself a sacrifice to the Father, and has commanded this to be done in commemoration of Himself, certainly that priest truly discharges the office of Christ, who imitates that which Christ did; and he then offers a true and full sacrifice in the Church to God the Father, when he proceeds to offer it according to what he sees Christ Himself to have offered.

[AD 407] John Chrysostom on John 15:14
How then says He, I have many things to tell you, but you cannot bear them now? John 16:12 By the all and the hearing He shows nothing else, but that He uttered nothing alien, but only what was of the Father. And since to speak of secrets appears to be the strongest proof of friendship, you have, He says, been deemed worthy even of this communion. When however He says all, He means, whatever things it was fit that they should hear. Then He puts also another sure proof of friendship, no common one. Of what sort was that?
[AD 430] Augustine of Hippo on John 15:14
1. When the Lord Jesus had commended the love which He manifested toward us in dying for us, and had said, Greater love has no man than this, that a man lay down his life for his friends, He added, You are my friends, if you do whatsoever I command you. What great condescension! When one cannot even be a good servant unless he do his lord's commandments; the very means, which only prove men to be good servants, He wished to be those whereby His friends should be known. But the condescension, as I have termed it, is this, that the Lord condescends to call those His friends whom He knows to be His servants. For, to let us know that it is the duty of servants to yield obedience to their master's commands, He actually in another place reproaches those who are servants, by saying, And why call ye me, Lord, Lord, and do not the things that I say? Luke 6:46 Accordingly, when you say Lord, prove what you say by doing my commandments. Is it not to the obedient servant that He is yet one day to say, Well done, good servant; because you have been faithful over a few things, I will make you ruler over many things: enter into the joy of your Lord? Matthew 25:21 One, therefore, who is a good servant, can be both servant and friend.

2. But let us mark what follows. Henceforth I call you not servants; for the servant knows not what his lord does. How, then are we to understand the good servant to be both servant and friend, when He says, Henceforth I call you not servants; for the servant knows not what his lord does? He introduces the name of friend in such a way as to withdraw that of servant; not as if to include both in the one term, but in order that the one should succeed to the place vacated by the other. What does it mean? Is it this, that even in doing the Lord's commandments we shall not be servants? Or this, that then we shall cease to be servants, when we have been good servants? And yet who can contradict the Truth, when He says, Henceforth I call you not servants? and shows why He said so: For the servant, He adds, knows not what his lord does. Is it that a good and tried servant is not likewise entrusted by his master with his secrets? What does He mean, then, by saying, The servant knows not what his lord does? Be it that he knows not what he does, is he ignorant also of what he commands? For if he were so, how can he serve? Or how is he a servant who does no service? And yet the Lord speaks thus: You are my friends, if you do whatsoever I command you. Henceforth I call you not servants. Truly a marvellous statement! Seeing we cannot serve the Lord but by doing His commandments, how is it that in doing so we shall cease to be servants? If I be not a servant in doing His commandments, and yet cannot be in His service unless I so do, then, in my very service, I am no longer a servant.

3. Let us, brethren, let us understand, and may the Lord enable us to understand, and enable us also to do what we understand. And if we know this, we know of a truth what the Lord does; for it is only the Lord that so enables us, and by such means only do we attain to His friendship. For just as there are two kinds of fear, which produce two classes of fearers; so there are two kinds of service, which produce two classes of servants. There is a fear, which perfect love casts out; 1 John 4:18 and there is another fear, which is clean, and endures for ever. The fear that lies not in love, the apostle pointed to when he said, For you have not received the spirit of service again to fear. Romans 8:15 But he referred to the clean fear when he said, Be not high-minded, but fear. Romans 11:20 In that fear which love casts out, there has also to be cast out the service along with it: for both were joined together by the apostle, that is, the service and the fear, when he said, For you have not received the spirit of service again to fear. And it was the servant connected with this kind of service that the Lord also had in His eye when He said, Henceforth I call you not servants; for the servant knows not what his lord does. Certainly not the servant characterized by the clean fear, to whom it is said, Well done, good servant: enter into the joy of your lord; but the servant who is characterized by the fear which love casts out, of whom He elsewhere says, The servant abides not in the house for ever, but the Son abides ever. Since, therefore, He has given us power to become the sons of God, let us not be servants, but sons: that, in some wonderful and indescribable but real way, we may as servants have the power not to be servants; servants, indeed, with that clean fear which distinguishes the servant that enters into the joy of his lord, but not servants with the fear that has to be cast out, and which marks him that abides not in the house for ever. But let us bear in mind that it is the Lord that enables us to serve so as not to be servants. And this it is that is unknown to the servant, who knows not what his Lord does; and who, when he does any good thing, is lifted up as if he did it himself, and not his Lord; and so, glories not in the Lord, but in himself, thereby deceiving himself, because glorying, as if he had not received. 1 Corinthians 4:7 But let us, beloved, in order that we may be the friends of the Lord, know what our Lord does. For it is He who makes us not only men, but also righteous, and not we ourselves. And who but He is the doer, in leading us to such a knowledge? For we have received not the spirit of this world, but the Spirit which is of God, that we might know the things that are freely given to us of God. 1 Corinthians 2:12 Whatever good there is, is freely given by Him. And so because this also is good, by Him who graciously imparts all good is this gift of knowing likewise bestowed; that, in respect of all good things whatever, he that glories may glory in the Lord. 1 Corinthians 1:31 But the words that follow, But I have called you friends; for all things that I have heard of my Father I have made known unto you, are so profound, that we must by no means compress them within the limits of the present discourse, but leave them over till another.
[AD 444] Cyril of Alexandria on John 15:14
In contrast to the terrors which will sometimes assail those inclined towards obedience and love of virtue He has set the gain of their love towards Him, in order that by the consolations ensuing from this, and by their aiming at what is greater, that which is burdensome may disappear and that which sometimes seems to cause pain sink into insignificance. Sweet is their labour to those who love God, since indeed theirs is a near and rich reward. Who then could conceive any thing greater, and what will he say is more glorious, than to be and be called the friend of Christ? For see how the reward surpasses the very limits of the nature of man. For all things are subject unto Him that made them, according to the saying of the Psalmist; and there is, I suppose, nothing in Creation which has not been subjected to the yoke of slavery, in accordance with the decree becoming the Creator and His work. For the work produced is not on an equality with its producer; and how could it be'? But God, Who is over all, will hold sway over and direct His own works. The universe then being under the yoke of subjection, and putting itself under servitude to God, the Lord leads up His holy ones to a supernatural glory, if they appear willing to work His Will and bring to Him, as an offering that is due, a blameless subjection. Their reward then is glorious and worthy of envy.

But we must consider this point especially at this juncture, for it will be of no small profit. For if friendship towards Christ will be sufficient in the case of any for the dignity of freedom and the being no longer called slaves, how could He be a slave except as made and created, according to the thoughtlessness of some? For He is not able to allot the honour of freedom to all others, while His own Nature is bereft of this attribute. For I suppose He must appear in possession of it more than all the rest, for then will He most suitably give to those who have it not the blessing that is His own. But the dignity must be conferred on and given to the holy Apostles, or perhaps also to all others who mount up through faith to the friendship that is towards our Lord Jesus Christ, as by way of honour, but not existing in like manner with that enjoyed by Him. For they, mounting up by their likeness to Him to the glory of liberty, would display by this that which naturally belongs to Him alone. For that which is by position is compared with that which is by nature.

This however we must demonstrate; for I think it is necessary to go through every inquiry which is useful and particularly necessitates explanation. For the justice which is derived from faith in Christ has a more ancient manifestation than that justice which is according to the law; and further, because the knowledge of the Divine mysteries is revealed to those that believe and obey Christ, and the counsel of God the Father is interpreted by him who knows that of the Son, but to those who are disobedient, not at all.

Come then, let us again illustrate this by the inspired Scripture, dwelling somewhat at length upon it to advantage. It has then been written in a book of Moses that Abraham believed in God, but his faith was accounted unto him for righteousness; and he was called the friend of God. And what was the manner of his faith, or how then was he called the friend of God? He heard the words, Get thee out of thy country, and from thy kindred, unto a land that I will show thee. Moreoyer, when he was enjoined to sacrifice his only son as a type of Christ he learnt the purpose hidden in God. And for this reason the Saviour spoke concerning him to the impious Jews, saying: Your father Abraham rejoiced to see My day; and he saw it and was glad. Therefore the inspired Abraham, owing to obedience and sacrifice, was called the friend of God and put on himself the boast of righteousness.

And not only this, but he was deemed worthy of Divine converse, and knew the counsel of God, which came to pass in the last times. For in the fulness of time Christ died for us----the true, sacred, and holy sacrifice which taketh away the sin of the world.

But see again a like fulfilment in the case of those who mount up by faith to the friendship of our Saviour Christ. They also heard the words Get thee out of thy country. And that they did it eagerly we may learn from what they say: For we have not here an abiding city, but we seek after the city which is to come, whose builder and maker is God. For they are strangers and sojourners upon earth, being citizens of heaven and leaving the land of their birth to speak allegorically of their heavenward aspirations, desiring eagerly the resting-place above. For this the Saviour set before them when He said, I go and will prepare a place for you; and when I come, I will receive you with Myself; that where I am, there ye may be also. They were told to go forth from their kindred; and how shall we show this? We will refer to Christ's own words: He that loveth father or mother more than Me is not worthy of Me. And that the things of God were preferred to their earthly and fleshly relationship, and their love towards Christ set forth as far stronger, is certainly unquestioned among those who reverence Him. And the blessed Abraham was ordered to bring to God his own son for an odour of a sweet-smelling savour, while others, girding themselves with the righteousness that is by faith, were commanded to offer not others but themselves. For he says: Present your bodies a living sacrifice, holy, acceptable to God, which is your reasonable service. Since it has been written concerning them: They that are of Christ Jesus have crucified the flesh with the passions and the lusts thereof, they knew the mystery that is in Christ. For they know the powers of the age to come, and what will be in the last days; for they will receive the rewards of their labours, and take as requital the recompence of their piety towards Christ. Therefore we shall become just and the friends of God, as did Abraham. And the Gospel dispensation is far more ancient than that of the Law. I mean by the Gospel dispensation that which is by faith and friendship towards God, then moulded first in Abraham, as in the beginning of his race according to the flesh, that is of Israel, but now coming as from a type to truth, and being well fulfilled in the holy disciples themselves, as in the beginning of a spiritual race preserved as a people for God's own possession, which also is called a holy nation and a royal priesthood. Therefore it has been said to the mother of the Jews, I mean the synagogue, by the voice of the Psalmist: Instead of fathers thy sons have been born.

For the inspired disciples are truly sons of the synagogue of the Jews, for they were nourished up in the Mosaic usages. They became fathers, holding the position of Abraham, and were the beginning of the spiritual race, and for this reason were ordained as rulers, offering up as a sacrifice the Gospel of Christ in all the world, as did Abraham Isaac as a type of Christ. We thus speak, not depriving the blessed Abraham of the glory which is his due and befits him, but showing in him, as in a figure, what has been appointed in the last days by Christ. The reward of friendship with God which was then seen in Abraham first is intimately conjoined with the freedom which comes by faith, and now also it is seen in the holy disciples as the firstfruits of a new generation. Let then the inspired Paul point out to us the necessity of thus speaking, vehemently contending with the Jews, that the righteousness that is of faith is far older than that of the Law. For when he made mention of the circumcision according to the flesh, he affirmed that this was given to the firstfruits of the race, that is Abraham, for no other reason save his becoming the sign and seal of the faith which he had while he was in uncircumcision. But if uncircumcision with which also is faith was before the Law, but circumcision which has not the glory of faith after the Law, and Abraham believed in uncircumcision, how will not the justice through faith of those who are justified and freed through love towards God, as was Abraham, be more ancient than the dispensation by the Law? For thus also he will be father of many nations by promise, not according to the flesh. And these things have we now pertinently said on account of our Lord's word: No longer do I call you servants: ye are My friends; for all things that I heard from My Father, I have made known unto you.