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.”

1 Samuel 26:19

26:19 So let my lord the king now listen to the words of his servant. If the Lord has incited you against me, may he take delight in an offering. But if men have instigated this, may they be cursed before the Lord! For they have driven me away this day from being united with the Lord’s inheritance, saying, ‘Go on, serve other gods!’