Resentment is a passive, weak emition that has no place in the Christian life. If there is injustice, we should deal with it through prayer and godly action. If there is insult, we should concentrate on who we are in Christ and not place too much value on the cruel words of others. If we face injustice in the course of our work for God, we should accept it as to be expected. And if God allows us to be dishonored for the sake of sanctification, the best, least painful response is to repent and allow Him to work in us.