1 Kings 21:27-29

27Now when Ahab heard these words [of Elijah], he tore his clothes, put on sackcloth and fasted, and he lay in sackcloth and went about dejectedly (mourning).

28Then the word of the Lord came to Elijah the Tishbite, saying,

29“Do you see how Ahab has humbled himself before Me? Because he has humbled himself before Me, I will not bring the evil (catastrophe) in his lifetime, but in his son’s days I will bring evil upon his house.”