1 Samuel 19:4-6

AKJV(i) 4 And Jonathan spoke good of David to Saul his father, and said to him, Let not the king sin against his servant, against David; because he has not sinned against you, and because his works have been to you-ward very good: 5 For he did put his life in his hand, and slew the Philistine, and the LORD worked a great salvation for all Israel: you saw it, and did rejoice: why then will you sin against innocent blood, to slay David without a cause? 6 And Saul listened to the voice of Jonathan: and Saul swore, As the LORD lives, he shall not be slain.