1 Samuel 18:12-16, 28-30

And Saul was afraid of David, because the LORD was with him, and was departed from Saul. Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people. And David behaved himself wisely in all his ways; and the LORD was with him. Wherefore when Saul saw that he behaved himself very wisely, he was afraid of him. But all Israel and Judah loved David, because he went out and came in before them.

And Saul saw and knew that the LORD was with David, and that Michal Saul's daughter loved him. And Saul was yet the more afraid of David; and Saul became David's enemy continually. Then the princes of the Philistines went forth: and it came to pass, after they went forth, that David behaved himself more wisely than all the servants of Saul; so that his name was much set by.