15 Hate the evil, and love the good, and establish judgment in the gate: it may be that the LORD God of hosts will be gracious unto the remnant of Joseph.
For when a man rules his own self—and that counts for more than to govern others—his heart is in the hand of God, and God turns it where he wills. No wonder if he turns it to the good, perfect goodness is his. And so let us be in the hand of God that we may seek the good, that incorruptible and immutable good of which the prophet Amos says, “Seek good and not evil, that you may live, and so the Lord God almighty will be with you, as you have said, ‘We have hated evil and loved good.’ ” And so, where the good God is, there are the good things that David desired to see and believed that he would see, even as he says, “I believe I shall see the good things of the Lord in the land of the living.” They indeed are the good things that endure always, that cannot be destroyed by change of time or of age.
Let us hurry to him in whom is that highest good, since he is goodness itself. He is the patience of Israel calling you to repentance, so you will not come to judgment but may receive the remission of sins. “Repent,” he says. He is the one of whom the prophet Amos cries, “Seek you good.” He is the highest good, for he needs nothing and abounds in all things. Well may he abound, for in him dwells bodily the fullness of divinity. Well may he abound, of whose fullness we have all received, and in whom we have been filled, as the Evangelist says.
(Vers. 14, 15.) Seek good, and not evil, so that you may live, and the Lord God of hosts will be with you as you said: Hate evil, and love good, and establish justice in the gates, perhaps the Lord God of hosts will have mercy on the remnant of Joseph. LXX: Seek good, and not evil, so that you may live, and the Lord God almighty will be with you, as you said: We have hated evil and loved good, and establish justice in the gates, so that the Lord God may have mercy on those who remain from Joseph. You say that God is with you because you are children of Abraham; listen to what follows: If you are Abraham's children, do the works of your father. What are the works of your father Abraham? Love what is good, and not what is evil. It is a great sin, not only to do evil, but also to love it. Many sin, and when the heat of desire is fulfilled, their conscience bites them, and they regret their sin. But there are those who not only do not feel sorry for doing what is evil, but they also boast in their wickedness, fulfilling what is written: When a sinner comes into the depths of impiety, he despises it. Seek good, therefore, and not evil. For if you seek good, in seeking good, you immediately repel evil. However, you would never seek good unless you had first repelled evil, fulfilling the words of the Psalmist saying: Turn away from evil, and do good (Ps. XXXVI, 27). And when you seek good and avoid evil, then you will live in him who says: I am the life (John XIV, 6). He seeks good who believes in him who speaks in the Gospel: I am the good shepherd (Ibid., X, 11). He who flees from evil repels it, of whom it is written: The world is placed in wickedness (1 John 5:16). And in the Lord's Prayer he says: Deliver us from evil (Matthew 6:13). And when you seek good and not evil, and live, then the Lord God of hosts will be with you, as you have said, because you are descendants of Abraham. It is not enough to seek good and not seek evil, unless you have ἐπιείκησιν in both, so that you first hate evil, then love good. He hates evil, who is not overcome by pleasure alone, but he hates the works of pleasure: and he loves good, who does what is good not unwillingly, or out of necessity, or out of fear of the laws; but rather because it is good, so that he may have the reward of good work in his own conscience, and the love that he possesses for good. Therefore the Apostle says: 'God loves a cheerful giver' (2 Corinthians 9). For not every act of charity pleases God, unless it is offered with cheerfulness. And when you hate evil and love good, establish justice at the gates, of which it is said above, so that, with iniquity expelled, truth may return. And if you do this, perhaps the Lord God Almighty will have mercy on the remnants of Joseph from the tribe of Ephraim and the ten tribes, and they will be able to escape captivity. All these things can be applied to heretics, so that, leaving behind the error they have fabricated, they may return to the Church and hate their former doctrines, and love in the Church of the Lord the truth, and exercise true judgement at the gates of vices and virtues, leaving those behind and passing to these, and may hope for mercy those who have been able to escape from the jaws of the devil. By changing the order according to the LXX, the reading of this chapter can be made clearer: Just as you said, we have hated evil and loved good, so seek good and not evil, that you may live, and may the Lord God Almighty be with you, and bring justice in the gates, so that the Lord God Almighty may have mercy on the remnant of Joseph.
It was the old custom that the elders should sit at the gate to make out by judicial trial the quarrels of persons at strife, in order that they should never enter the city at variance and should dwell there in harmony. And hence the Lord says by the prophet, “Establish judgment at the gate.”
remnant of Joseph: Once again he refers to Ephraim, or the 10 tribes; as I said before, since Ephraim was a son of Joseph, he consequently refers to him also by his father’s name.
[AD 397] Ambrose of Milan on Amos 5:14-15