1 Samuel 26:8-11

8Then said Abishai to David, God hath delivered thine enemy into thine hand this day: now therefore let me smite him, I pray thee, with the spear even to the earth at once, and I will not smite him the second time.1

9And David said to Abishai, Destroy him not: for who can stretch forth his hand against the Lord’s anointed, and be guiltless?

10David said furthermore, As the Lord liveth, the Lord shall smite him; or his day shall come to die; or he shall descend into battle, and perish.

11The Lord forbid that I should stretch forth mine hand against the Lord’s anointed: but, I pray thee, take thou now the spear that is at his bolster, and the cruse of water, and let us go.