Please, please, please do not rebuke your friend with self-satisfying relish. No one should ever enjoy rebuking a friend. There will be a shaking voice, tears in your eyes, trembling hands, a sincere conviction, and a heart dripping with gracious love. You won’t expect them to listen to you, but to listen to the truth. Anything else is just your flesh trying to prove a point. Then you need to go back to the lab in prayer to wrestle that flesh into the ground. You don’t ever rebuke to prove something. You rebuke to help your friend away from the edge of death.