Jonah 3:9-10

These things, dearly beloved, we are writing, not only to warn you but also to remind ourselves; for we are in the same arena, and the same contest lies before us. For this reason let us abandon empty and silly concerns and come to the glorious and holy rule of our tradition. Let us see what is good and pleasing and acceptable in the sight of our Maker. Let us fix our gaze on the blood of Christ and realize how precious it is to his Father, seeing that it was poured out for our salvation and brought the grace of conversion to the whole world. Let us look back over all the generations and learn that from generation to generation the Lord has given an opportunity of repentance to all who would return to him. Noah preached penance, and those who heeded were saved. Then Jonah announced destruction to the Ninevites and they repented of their sins, besought God in prayer and, estranged though they were from God, obtained salvation.

Now, if [forgiveness of sin had not] been predicted of Christ, I should find in the Creator examples of such benignity as would hold out to me the promise of similar affections also in the Son of whom he is the Father. I see how the Ninevites obtained forgiveness of their sins from the Creator—not to say from Christ [by way of anticipation], even then, because from the beginning he was acting in the Father’s name.

Divine repentance takes in all cases a different form from that of man, in that it is never regarded as the result of improvidence or of fickleness, or of any condemnation of a good or an evil work. For it will have no other meaning than a simple change of a prior purpose; and this is admissible without any blame even in a man, much more in God, whose every purpose is faultless. Now in Greek the word for repentance (METANOIA) is formed, not from the confession of sin, but from a change of mind, which in God we have shown to be regulated by the occurrence of varying circumstances.

And that these words are not a vain boast shall be made manifest to you for things that have already happened. What could be more stupid than the Ninevites? What more devoid of understanding? Yet, nevertheless, these barbarian, foolish people, who had not yet heard any one teaching them wisdom, who had never received such precepts from others, when they heard the prophet saying, “Yet three days, and Nineveh shall be overthrown,” laid aside, within three days, the whole of their evil customs. The fornicator became chaste; the bold man meek; the grasping and extortionate moderate and kind; the slothful industrious. They did not, indeed, reform one or two or three or four vices by way of remedy, but the whole of their iniquity. But where does this appear, says someone? From the words of the prophet; for the same who had been their accuser and who had said that “the cry of their wickedness has ascended up even into heaven,” himself again bears testimony of an opposite kind by saying, “God saw that every one departed from their own evil ways.” He does not say from fornication or adultery or theft, but from their “own evil ways.” And how did they depart? As God knew; not as people judged of the matter. After this are we not ashamed, must we not blush, if it turns out that in three days only the barbarians laid aside all their wickedness, but that we, who have been urged and taught during so many days, have not got the better of one bad habit? These people had moreover gone to the extreme of wickedness before; for when you hear it said, “The cry of their wickedness is come up before me,” you can understand nothing else than the excess of their wickedness. Nevertheless within three days they were capable of being transformed to a state of complete uprightness.

For the fear was the cause of their safety. The threatening effected the deliverance from the peril. The sentence of destruction put a stop to the destruction. O strange and astonishing event! The threatening of death brought forth life.

Consider, if God had chosen to demolish everything [in a recent earthquake], what we would have suffered. I say this, so that the fear of these events may remain sharp in you and may keep everyone’s resolution firm. He shook us, but he did not destroy us. If he had wished to destroy us, he would not have shaken us. But since he did not wish to destroy us, the earthquake came in advance like a herald, forewarning everyone of the anger of God, in order that we might be improved by fear and prevent the actual retribution.He has done this even for foreign nations. “Yet three days, and Nineveh shall be overthrown.” Why do you not overcome the city? You threaten to destroy it. Why do you not destroy it? “Because I do not wish to destroy, for this very reason I threaten.” So what is the Lord saying? “Lest I enact my impending judgment, let my word go in advance and prevent my acting.” Yet three days, and Nineveh shall be overthrown. Then the prophet spoke. Today these walls speak. I say this, and I do not cease saying it, both to the poor and to the rich: consider how great is God’s anger. Consider how simple his requirement: let us abstain from evil! In a brief moment of time he shattered the mind and resolution of each one of us. He shook the foundations of our hearts.