To me belongs vengeance, and recompense; their foot shall slide in due time: for the day of their calamity is at hand, and the things that shall come upon them make haste.
Read Chapter 32
Ambrose of Milan
AD 397
Since God said in the Old Testament, “Vengeance is mine, I shall repay,” he says in the Gospel that we should pray for those who harm us, in order that he who promised vengeance might not seek revenge against them. For [God] wants to forgive by your will, which is fitting according to his promise. But if you seek revenge, you have it, since the unjust man is punished more by his thoughts than by judicial severity.
Time. Men are eager to punish their enemies, for fear lest they should escape. But God defers his chastisements frequently in this world, designing to make his enemies feel the weight of his indignation for all eternity. How consoling it is for the just, to think they have God for an avenger. "If thou, says Tertullian, remit the injury, which thou hast received, into his hands, he is the avenger. How much ought patience to endure, in order to make God a debtor. "Adeo satisidoneus patientiæ sequester Deus.
That. Septuagint, "when "(Calmet) they shall fall and come to ruin. (Menochius)