1 Samuel 18

1 Samuel 18:27,28 (KJV)
27 Wherefore David arose and went, he and his men, and slew of the Philistines two hundred men; and David brought their foreskins, and they gave them in full tale to the king, that he might be the king’s son in law. And Saul gave him Michal his daughter to wife.
28 And Saul saw and knew that the Lord was with David, and that Michal Saul’s daughter loved him.

1 Samuel 18:12-14 (KJV)
12 And Saul was afraid of David, because the Lord was with him, and was departed from Saul.
13 Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people.
14 And David behaved himself wisely in all his ways; and the Lord was with him.