1 Samuel 15:11

15:11 “I regret that I have made Saul king, for he has turned away from me and has not done what I told him to do.” Samuel became angry and he cried out to the Lord all that night.

1 Samuel 15:29

15:29 The Preeminent One of Israel does not go back on his word or change his mind, for he is not a human being who changes his mind.”