1 Samuel 18:28-32

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.