1 Samuel 18:14

10On the next day, an evil spirit from God came mightily on Saul, and he prophesied in the middle of the house. David played with his hand, as he did day by day. Saul had his spear in his hand;

11and Saul threw the spear, for he said, “I will pin David to the wall!” David escaped from his presence twice.

12Saul was afraid of David, because the LORD was with him, and had departed from Saul.

13Therefore Saul removed him from his presence, and made him his captain over a thousand; and he went out and came in before the people.

14David behaved himself wisely in all his ways; and the LORD was with him.

15When Saul saw that he behaved himself very wisely, he stood in awe of him.

16But all Israel and Judah loved David; for he went out and came in before them.

17Saul said to David, “Behold, my elder daughter Merab. I will give her to you as wife. Only be valiant for me, and fight the LORD’s battles.” For Saul said, “Don’t let my hand be on him, but let the hand of the Philistines be on him.”

18David said to Saul, “Who am I, and what is my life, or my father’s family in Israel, that I should be son-in-law to the king?”