1 Samuel 26:11-12

11Adonai forbid that I should lay my hand on Adonai’s anointed! Now, just take the spear that is at his head and the water jar and let’s go.”

12So David took the spear and the water jar from beside Saul’s head. They got away—and no one saw it, or knew it, or woke up—for all were asleep, for a deep sleep from Adonai had fallen upon them.