Now therefore, please let my lord the king hear the words of his servant. If it be Yahweh that has stirred you up against me, let him accept an offering: but if it be the children of men, cursed be they before Yahweh: for they have driven me out this day that I shouldn't cling to Yahweh's inheritance, saying, Go, serve other gods.
Saul underneath knew that someday David was gonna take the throne. He was trying to protect the throne and to pass it onto his own children. But yet in his heart, he knew that God had anointed David, and that David was God's anointed king. "Then Saul said to David, Blessed be thou, my son David: thou shalt both do great things, and still prevail."