1 Samuel (Author Compiled by Isaiah from records of Samuel, David, Nathan, and Gad.)
18:17And Saul said to David, Behold my eldest daughter Merab, her will I give thee to wife; only be thou valiant for me, and fight Jehovah's battles. But Saul thought, My hand shall not be upon him, but the hand of the Philistines shall be upon him.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.