1 Samuel 18:12-16, 28-30

Now Saul was afraid of David, because the LORD was with him, but had departed from Saul. So Saul had David removed from his presence and appointed him as his commander of a thousand; and he publicly associated with the people. David acted wisely and prospered in all his ways, and the LORD was with him. When Saul saw that he was prospering greatly, he was afraid of him. But all Israel and Judah loved David, because he publicly associated with them.

When Saul saw and knew that the LORD was with David, and that Michal, his daughter, loved him, Saul was even more afraid of David; and Saul became David’s constant enemy. Then the Philistine commanders (princes) came out to battle, and it happened as often as they did, that David acted more wisely and had more success than all Saul’s servants. So his name was highly esteemed.