1 Samuel 18:12,13

Saul w as afraid of David Lest, as he had gained the favour of God, and of all the people, he should also take away his kingdom. Saul removed him from him From his presence and court; which he did because he feared lest David should find an opportunity to kill him, as he had designed to kill David; because his presence now made him more sad than ever his music had made him cheerful; and principally, that hereby he might expose him to the greatest hazards. And made him his captain over a thousand Instead of captain of his guard, which required his attendance at court, he gave him a command abroad; but where, or at what distance, we are not informed. This he did, hoping he might be killed in some expedition, or that an opportunity might occur for taking away his life privately. And he went out and came in, &c. As the leader of those thousand men.