1 Samuel 25:29-31

29If men rise up to pursue you and to seek your life, the life of my lord shall be bound in the bundle of the living in the care of the Lord your God. And the lives of your enemies he shall sling out as from the hollow of a sling.

30And when the Lord has done to my lord according to all the good that he has spoken concerning you and has appointed you prince over Israel,

31my lord shall have no cause of grief or pangs of conscience for having shed blood without cause or for my lord working salvation himself. And when the Lord has dealt well with my lord, then remember your servant."