Romans 1:9

God is a witness to his saints, because they too are witnesses of God, according to what the prophet says: "You shall be my witnesses, and I am a witness, says the Lord." But the Savior also says to the disciples: "You shall be my witnesses in Jerusalem, and in Samaria, and in all the ends of the earth", according to that which is written: "He who shall confess in me, I also will confess in him before my Father." But let us see what it is that he says, "whom I serve in my spirit." To serve in the spirit seems to me to be like — indeed, something even greater than — to worship in the spirit, as the Lord himself said to the Samaritan woman: "The hour comes, and now is, when the true worshippers shall worship the Father in spirit and in truth." But Paul not only worships in the spirit, but also devotedly serves in the spirit. For one can worship even without affection; but devoted service belongs to him whom affection binds fast. The Apostle therefore devotedly serves God, not in the body, nor in the soul, but in the better part of himself, that is, in the spirit. For he indicates that these three are in man when writing to the Thessalonians, when he says: "That your whole body, and soul, and spirit may be preserved in the day of our Lord Jesus Christ." And Daniel says: "Praise the Lord, you spirits and souls of the just." The Apostle therefore everywhere prefers the spirit, and rejects the flesh or the things which are of the flesh. Finally he praises the spirit of the law itself; but the letter he spurns as though it were flesh, when he says: "The letter kills, but the spirit gives life." And also when he says: "For in that wherein the law was weak through the flesh, God sending his own Son in the likeness of sinful flesh" — by the flesh of the law he means, without doubt, the letter of the law. For through the letter the law was made weak, so that it could not be fulfilled. For who could fulfill even what is written concerning the Sabbath: "You shall not move from your place on the day of the Sabbath" (for how could it come about that anyone should not move at all from his place on the day of the Sabbath?), or the laws concerning leprosy arising in the warp, or in a wall, or in a skin, and a thousand other things in which, according to the letter as according to the flesh, the law was made weak? For this reason therefore the Apostle says that the law is spiritual. He, then, who understands the law to be spiritual, this man serves God in the spirit. Whence he says elsewhere: "For if you live according to the flesh, you shall die" — that is, according to the letter which kills; "but if by the spirit you mortify the deeds of the flesh, you shall live." It must indeed be asked whether the ancient fathers also, the patriarchs or the prophets, who were themselves also perfect, are to be believed to have served God in the spirit; for Abraham too desired to see the day of the Lord, and saw it, and rejoiced; and Moses and Elijah appeared in glory speaking with Jesus on the mountain. In which it is shown that the Law and the Prophets are in harmony with the Gospels, and shine forth in the same glory of spiritual sight and understanding.

In order to encourage brotherly love, Paul gives God, whom he serves, as a witness, to whom he prays on their behalf, not in keeping the law but in the gospel of his Son, i.e., not in that which Moses the servant handed down but in that which the most beloved Son taught. For the servant is as far from his Lord as the gospel is from the law, not because the law is wrong but because the gospel is better. Therefore Paul serves God in the gospel of his Son in order to show that it is God's will that men should believe in Christ."Whom I serve." How? In my spirit, says Paul, not in the circumcision made with hands, nor in new moons, nor in the sabbath or the choice of foods, but in the spirit, that is, in the mind. Because God is a spirit, it is right that he should be served in spirit or in the mind, for whoever serves him in his mind serves him in faith. This is what the Lord said to the Samaritan woman in John. … He prays without ceasing for them, remembering them in his prayers in order to sow brotherly love among them; indeed, he makes this his desire for them. For who would not love someone when he hears that that person remembers him? For if they had willingly listened to the teaching brought to them in the name of Christ by those who were not sent, how much more would they want to listen to him who they knew was an apostle and whose words were accompanied by power!

Words these of an Apostle's bowels of affection, the showing forth this of fatherly concernment! And what is it which he says, and why does he call God to witness? He had to declare his feeling toward them. Since then he had not as yet ever seen them, he therefore called no man to witness, but Him Who entereth in the hearts. For since he was saying, "I love you," and as a token thereof alleged his praying continually for them, and wishing to come to them, and neither was this self-evident, he betakes himself to the trustworthy testimony. Will then any one of you be able to boast that he remembers, when praying at his house the entire body of the Church? I think not. But Paul drew near to God in behalf not of one city only, but of the whole world, and this not once, or twice, or thrice, but continually. But if the continually bearing any one about in one's memory would not happen without much love; to have any in one's prayers, and to have them there continually, think what great affection and friendship that implies. But when he says, "Whom I serve with my spirit in the Gospel of His Son," he shows us at once the grace of God, and also his own humble-mindedness; the grace of God because He entrusted to him so great a matter; but his own humility, because he imputes it all not to his own zeal, but to the assistance of the Spirit. But the addition of "the Gospel," shows the kind of ministry. For there are many and diverse modes of service. And as under kings all are ranged under one that beareth kingly power, and all have not to minister about the same thing, but to one belongeth the ministry of ruling armies and to another that of ordering cities and to another again that of keeping treasures in the storehouses, thus also in spiritual things, one serveth God and laboreth in believing and ordering his own life well, and another in undertaking the care of strangers, and another in taking in hand the patronship of them that be in need. As even during the Apostle's own time, they of Stephen's company served God in the guardianship of the widows, others in the teaching of the word, of whom also Paul was, serving in the preaching of the Gospel. And this was the fashion of his service: for it was to this that he was appointed. On this account, he not only calls God to witness, but also says what he was entrusted with, to show that having so great things put into his hands, he would not have called Him Who trusted them to him to witness what was false. And therewith he wished to make another point out also, viz. that he could not but have this love and care for them. For that they might not say "who art thou? and, from whence? that thou sayest that thou art anxious over a city so great, and most imperial," he shows that he must needs have this care, if at least the sort of service that was committed to him, was to declare the Gospel: for he that hath this put into his hands, must needs have continually upon his mind them that are to receive the word. And he shows another thing besides this by saying, "in my spirit;" that this service is much higher than either the Gentile or the Jewish. For the Gentile is both fleshly and in error, and the Jewish is true indeed, yet even this is fleshly. But that of the Church is the opposite of the Gentile, but more lofty than the Jewish by a great deal. For the mode of our service is not with sheep and oxen and smoke and fat, but by a spiritual soul, which Christ also shows in saying that "God is a Spirit, and they that worship Him must worship Him in spirit and in truth." (John iv. 24.)

"In the Gospel of His Son." Having said above that it was the Father's Gospel, here he says it is the Son's. So indifferent is it to say the Father's or the Son's! For he had learnt from that blessed voice that the things of the Father are the Son's, and the things of the Son are the Father's. For "all Mine are Thine, and Thine are Mine." (John xvii. 10.)

"That without ceasing I make mention of you always in my prayers." This is the part of genuine love, and he seems indeed to be saying some one thing, yet states four things even here. Both that he remembers, and that he does so continually, and that it is in his prayers, and that it is to ask great things for them.

Paul serves God with his whole heart and with a ready zeal.… He also presents a model of unceasing prayer.

Paul rightly says "with my spirit," contrasting this with the carnal worship of the Jews in circumcision and sabbatarianism and other such sacrifices, none of which is either spiritual or true. Some have pointed out that the phrase is a simpler way of saying "with my mind and with my will."

When Paul mentioned "his spirit," he was not speaking about the person of the Spirit but about the grace of the Spirit which had been given to him to preach the gospel and by which, once he had been made worthy to be a coworker with God, he was enabled to carry out his work of mission.

Since Paul had not yet seen the Romans, yet wanted to say that he always remembers them, he calls as witness the One Who knows hearts. Notice the tender compassion of the apostle: he always remembers people whom he had not even seen. Where does he remember them? In his prayers, and moreover unceasingly. I "serve" God, that is, I am a slave "in my spirit," that is, not with fleshly service, but with spiritual service; for pagan worship is fleshly and false, and Jewish worship, though not false, is also fleshly, whereas Christian worship is true and spiritual, as the Lord also says to the Samaritan woman: "the true worshipers will worship the Father in spirit and truth" (Jn. 4:23). Since there are many kinds of service to God (for one serves and labors for God by managing only his own affairs, another by caring for strangers and providing for widows, as the fellow servants of Stephen did, and another by fulfilling the ministry of the word), the apostle says: "God, Whom I serve in my spirit in the gospel of His Son." Above he attributed the gospel to the Father; but this is not strange, for what belongs to the Father belongs to the Son, and what belongs to the Son belongs to the Father. He says this, demonstrating that these cares are necessary for him; because the one who has been entrusted with the ministry of the gospel must care for all who have received the word.

A promissory oath is made in three ways, namely for promoting good, for preserving fidelity, and for entering into mutual peace. In the first way, inferiors swear to superiors; in the second way, equals to equals; in the third way, superiors to inferiors. By the first oath the Apostle swore, saying: "God is my witness, whom I serve in my spirit." From this first oath a threefold benefit results: faith in the intellect, love in the affections, and peace in effect.

Then when he says for God is my witness, he shows his affection for them from the prayer he offers for them. And because the business of prayer is carried on in secret in God's presence: when you pray, go into your room and shut the door and pray to your Father in secret (Matt 6:6), he calls on God to testify that he prays for them. First, therefore, he calls on the witness; second he shows on what point he calls the witness.

He calls on the witness when he says God is my witness under whose witness all things are done: I am judge and witness (Jer 29:23). Then, to show that he is not mistaken in calling on the just witness, he mentions how he is joined to him. First, in regard to service when he says whom I serve, namely, with the worship of latria: the Lord your God shall you adore and him alone shall you serve (Deut 6:13). Second, in regard to the way he served when he says, in my spirit. As if to say: not only in outward bodily service, but especially within, according to the spirit: God is spirit, and those who worship him must worship in spirit and truth (John 4:24). Or in spirit, i.e., in spiritual observances, not in carnal, as the Jews: we are the true circumcision who worship God in spirit (Phil 3:3). Third, in regard to the office in which he serves, namely, in the Gospel of his Son: separated unto the Gospel (Rom 1:1). It is the Gospel of the Son in three ways: first, because it is about him: I bring you good news of a great joy (Luke 2:10). Second, because it was preached by him as a special duty: I must preach the good news of the kingdom of God to the other cities also, for I was sent for this purpose (Luke 4:43). Third, because it was enjoined by him: preach the Gospel to every creature (Mark 16:15).

But since, as Augustine says, it is the same to say for God is my witness and I swear by God, the Apostle seems to be acting against the Lord's command: I say to you, do not swear at all (Matt 5:34); above all, my brethren, do not swear (Jas 5:12). However, as Augustine also says, the meaning of Sacred Scripture is gathered from the actions of the saints. For it is the same Spirit who inspired the Sacred Scriptures: men moved by the Holy Spirit spoke from God (2 Pet 1:21) and who moves holy men to act: all who are led by the Spirit are sons of God (Rom 8:14).

Consequently, if Paul is found to swear, it shows that the Lord's word and that of the apostle James are not to be understood as indicating that an oath is absolutely unlawful, but that men should strive as far as possible not to use oaths as though they were something good and desirable of their very nature. And this on account of the danger involved in frequent swearing, namely, the possibility of perjury due to a slip of the tongue. Ecclesiastes says, do not accustom your mouth to oaths for many are tripped by them (Sir 23:9). Also because it seems contrary to the reverence we owe God for one to call God as witness without necessity. Hence: let not the naming of God be usual in your mouth (Sir 23:10). For this reason the Apostle never made an oath except in writing, when a man speaks with greater deliberation and caution.

Yet an oath is sometimes necessary to lend credence to a speaker, which in turn often benefits the hearer. Consequently, the Apostle makes an oath for the benefit of his hearer, for whom it was beneficial to believe, as though not seeking what was useful to himself but to the majority, namely, their salvation.

Hence, the Lord's statement that anything more than this, i.e., than a simple word, comes from evil (Matt 5:37) does not imply that it comes from evil in the one who swears, but in the one who demands the oath: it comes not from the evil of sin, except in the case where a person judges that the one from whom he demands the oath will swear falsely—in which case it is a serious sin, as Augustine says. Rather, it implies that it comes from the evil of punishment, i.e., our ignorance of whether something said to us is true.

It should be noted that there are two ways of making an oath: one is by a simple statement, as when it is said by God or God is my witness. This is the form the Apostle uses here. The other is by an imprecation, namely, when a person calls on God's witness in the form of some punishment to be inflicted on the speaker if he is lying: if I have requited evil with evil (Ps 7:3ff.). The Apostle also uses this form, as in 2 Corinthians: I call God to witness against my life (2 Cor 1:23).