Bible Verses About Treachery: Of Joab

Then Joab going out from David, sent messengers after Abner, and brought him back from the cistern of Sira, David knowing nothing of it.

And when Abner was returned to Hebron, Joab took him aside to the middle of the gate, to speak to him treacherously: and he stabbed him there in the groin, and he died, in revenge of the blood of Asael his brother.