But he also forgave David his many transgressions against others and in fact David and others are said to have committed grave acts of genocide and general mayhem and murder without any guilt other than becoming ritually impure. And this to had a remedy in the Law. Also Moses murdered the cruel overseer and hid the body in the sand. Perhaps its only Jews who can kill Gentiles and remain guilt free?
1 Samuel 2:25
If one person sins against another, God may mediate for the offender; but if anyone sins against the Lord, who will intercede for them?â€� His sons, however, did not listen to their fatherâ€™s rebuke, for it was the Lordâ€™s will to put them to death