Her will I give thee to wife: this was no more than Saul was obliged to do by his former promise, 1 Samuel 17:25, which here he renews and pretends to perform, though he intended nothing less, as the sequel shows; whereby he makes himself guilty of ingratitude, injustice, and breach of trust, and withal of gross hypocrisy. Let the hand of the Philistines be upon him; he thought so great an offer would oblige him, who was of himself valiant enough to give proofs of more than common valour, and to venture upon the most dangerous enterprises.
Related Commentaries of 1 Samuel 18:17
1 Samuel 18:17
17 And Saul said to David, Behold my elder daughter Merab, her will I give thee to wife: only be thou valiantc for me, and fight the LORD'S battles. For Saul said, Let not mine hand be upon him, but let the hand of the Philistines be upon him.