Eph 4:30 Do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.
Eph 4:31 Let all bitterness and wrath and anger and clamor and slander be put away from you, along with all malice.
Eph 4:32 Be kind to one another, tender-hearted, forgiving each other, just as God in Christ also has forgiven you.
Mat 18:16 "But if he does not listen to you, take one or two more with you, so that BY THE MOUTH OF TWO OR THREE WITNESSES EVERY FACT MAY BE CONFIRMED.
Mat 18:17 "If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector.