Jonah 3:4
Jonah began to enter into the city a day's journey, and he cried out, and said, "In forty days, Nineveh will be overthrown!"
Deuteronomy 18:22
when a prophet speaks in the name of Yahweh, if the thing doesn't follow, nor happen, that is the thing which Yahweh has not spoken: the prophet has spoken it presumptuously, you shall not be afraid of him.
Jeremiah 18:7-10
At what instant I shall speak concerning a nation, and concerning a kingdom, to pluck up and to break down and to destroy it;
2 Kings 20:1
In those days was Hezekiah sick to death. Isaiah the prophet the son of Amoz came to him, and said to him, "Thus says Yahweh, 'Set your house in order; for you shall die, and not live.'"
2 Kings 20:6
I will add to your days fifteen years. I will deliver you and this city out of the hand of the king of Assyria. I will defend this city for my own sake, and for my servant David's sake."'"
Jonah 3:10
God saw their works, that they turned from their evil way. God relented of the disaster which he said he would do to them, and he didn't do it.