1 Samuel 17:25
And the men of Israel said, Have you seen this man that is come up? surely to defy Israel is he come up: and it shall be, that the man who kills him, the king will enrich him with great riches, and will give him his daughter, and make his father's house free in Israel.
Nave's Topical Index—AKJV

1 Samuel 18:17,21
And Saul said to David, Behold my elder daughter Merab, her will I give you to wife: only be you valiant for me, and fight the LORD's battles. For Saul said, Let not my hand be on him, but let the hand of the Philistines be on him.
Nave's Topical Index—AKJV