1 Samuel 19:4-6

Revised Standard Version

⁴ And Jonathan spoke well of David to Saul his father, and said to him, “Let not the king sin against his servant David; because he has not sinned against you, and because his deeds have been of good service to you; ⁵ for he took his life in his hand and he slew the Philistine, and the Lord wrought a great victory for all Israel. You saw it, and rejoiced; why then will you sin against innocent blood by killing David without cause?” ⁶ And Saul hearkened to the voice of Jonathan; Saul swore, “As the Lord lives, he shall not be put to death.”