1 Samuel 18:27-31

David set out and went, he and his men, and fatally struck two hundred men among the Philistines. Then David brought their foreskins, and they presented all two hundred of them to the king, so that he might become the king’s son-in-law. And Saul gave him his daughter Michal as a wife.

When Saul saw and realized that the Lord was with David, and that Michal, Saul’s daughter, loved him,

then Saul was even more afraid of David. So Saul was David’s enemy continually.

Then the commanders of the Philistines went to battle, and it happened as often as they went out, that David was more successful than all the servants of Saul. So his name was held in high esteem.