1 Samuel 19:4-6

Douay-Rheims 1899 American Edition

⁴ And Jonathan spoke good things of David to Saul his father: and said to him: Sin not, O king, against thy servant, David, because he hath not sinned against thee, and his works are very good towards thee.

⁵ And he put his life in his hand, and slew the Philistine, and the Lord wrought great salvation for all Israel. Thou sawest it and didst rejoice. Why therefore wilt thou sin against innocent blood by killing David, who is without fault?

⁶ And when Saul heard this he was appeased with the words of Jonathan, and swore: As the Lord liveth he shall not be slain.