NET

5 He risked his life when he struck down the Philistine, and the Lord gave all Israel a great victory. When you saw it, you were happy. So why would you sin against innocent blood by putting David to death for no reason?”

Darby

5 for he put his life in hand, and smote the Philistine, and Jehovah wrought a great salvation for all Israel: thou didst see [it], and didst rejoice; why then wilt thou sin against innocent blood, in slaying David without cause?

KJV

5 For he did put his life in his hand, and slew the Philistine, and the LORD wrought a great salvation for all Israel: thou sawest [it], and didst rejoice: wherefore then wilt thou sin against innocent blood, to slay David without a cause?