1 Samuel 26:8-9

Then said Abishai to David, God hath delivered up thine enemy into thy hand this day: now therefore let me smite him, I pray thee, with the spear to the earth at one stroke, and I will not smite him the second time. And David said to Abishai, Destroy him not; for who can put forth his hand against Jehovah’s anointed, and be guiltless?