Bible Verses About Treachery: Of Joab

When Joab had come out from David, he sent messengers after Abner, and they brought him back from the well of Sirah; but David didn’t know it.

When Abner was returned to Hebron, Joab took him aside into the midst of the gate to speak with him quietly, and struck him there in the body, so that he died, for the blood of Asahel his brother.