For we know God, who said [Deut. 32:35], “Revenge belongs to me; I will pay back [for wrongdoing].” And again [Deut. 32:36], “The Lord will judge His people.”
But [Prov. 25:21-25 says], “Feed your enemy if he is hungry; give him something to drink if he is thirsty. For when you do this, it will be [like] heaping burning coals on his head.” [i.e., it can cause him burning shame that can lead to his repentance and ultimate forgiveness].
For they are servants of God for your good. But you should be afraid if you do what is evil, because they do not carry the sword [i.e., for executing criminals] for nothing. For they are servants of God who take revenge [on wrongdoing] by punishing the person who does evil.
For we must all appear in front of the judgment bar of Christ, so that each one of us may receive what is due him for what he had done while in his [physical] body [i.e., on earth], whether it be good or bad.