Jonah 3:6

4Jonah began to enter into the city a day’s journey, and he cried out, and said, “In forty days, Nineveh will be overthrown!”

5The people of Nineveh believed God; and they proclaimed a fast and put on sackcloth, from their greatest even to their least.

6The news reached the king of Nineveh, and he arose from his throne, took off his royal robe, covered himself with sackcloth, and sat in ashes.

7He made a proclamation and published through Nineveh by the decree of the king and his nobles, saying, “Let neither man nor animal, herd nor flock, taste anything; let them not feed, nor drink water;

8but let them be covered with sackcloth, both man and animal, and let them cry mightily to God. Yes, let them turn everyone from his evil way and from the violence that is in his hands.