1 Samuel 18:7, 12-14

And the women sang to one another as they celebrated, “Saul has struck down his thousands, and David his ten thousands.”

Saul was afraid of David because the LORD was with him but had departed from Saul. So Saul removed him from his presence and made him a commander of a thousand. And he went out and came in before the people. And David had success in all his undertakings, for the LORD was with him.