Jonah 3:1-5, 10
3:1 The word of the LORD came to Jonah a second time, saying,

3:2 "Get up, go to Nineveh, that great city, and proclaim to it the message that I tell you."

3:3 So Jonah set out and went to Nineveh, according to the word of the LORD. Now Nineveh was an exceedingly large city, a three days' walk across.

3:4 Jonah began to go into the city, going a day's walk. And he cried out, "Forty days more, and Nineveh shall be overthrown!"

3:5 And the people of Nineveh believed God; they proclaimed a fast, and everyone, great and small, put on sackcloth.

3:10 When God saw what they did, how they turned from their evil ways, God changed his mind about the calamity that he had said he would bring upon them; and he did not do it.