Saul thought that he could ignore God’s revelation (1 Samuel 13:13–14) and somehow secure the future of his dynasty.1 Having been persuaded that David was the king-in-waiting ready to replace Saul (1 Samuel 15:28), Saul realizes that he had to take David’s life if he was to ensure his own future heritage.2
31 For as long as the son of Jesse lives on the earth, neither you nor your kingdom shall be established. Therefore send and bring him to me, for he shall surely die.”