1 Samuel 26:9-11

9And David said to Abishai, Destroy him not; for who can stretch forth his hand against Jehovah's anointed, and be guiltless?

10And David said, [As] Jehovah liveth, Jehovah will surely smite him; either his day shall come to die, or he shall descend into battle and perish.

11Jehovah forbid that I should stretch forth my hand against Jehovah's anointed! But now take, I pray thee, the spear that is at his head, and the cruse of water, and let us go.