Matthew 5:22-24 "But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, 'You fool!' will be liable to the hell of fire. So if you are offering your gift at the altar and there remember that your brother has something against you, leave your gift there before the altar and go. First be reconciled to your brother, and then come and offer your gift."
Eph 4:31-32 "Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice: And be ye kind one to another, tenderhearted, forgiving one another, even as God for Christ's sake hath forgiven you."
Col 3:8 "But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth."
Col 3:21 "Fathers, provoke not your children to anger, lest they be discouraged."