Matthew 5:22
But I say to you that anyone who is angry with his brother shall be subject to judgment. And whoever says to his brother, 'Raca,' shall be answerable to the council. But whoever says, 'You fool!' shall be in danger of the fire of hell.
Ephesians 4:31
Let all bitterness and wrath and anger and clamor and slander be put away from you, along with all malice.
Ephesians 6:4
Fathers, do not provoke your children to anger, but bring them up in the discipline and instruction of the Lord.
James 1:19-20
This you know, my beloved brethren. But everyone must be quick to hear, slow to speak and slow to anger,