Matthew 5:22
But I say to you that every person who is angry toward his brother will be subject to judgment; and whoever calls his brother 'stupid idiot' is subject to [being sentenced by] the [Jewish] Council, and whoever says, 'go to hell' is subject to going to the fire of hell [himself].
Ephesians 4:31
So, put away from you all [kinds of] bitterness and anger and wrath and brawling and slander, along with all [kinds of] malice [i.e., bad attitudes],
Ephesians 6:4
And you fathers [Note: This word probably includes both parents], do not stir up your children to become angry, but bring them up in the training and instruction of the Lord.
James 1:19-20
You people [already] know this [or, "you should know this"], my dearly loved brothers. However, every person should be quick to listen, slow to talk and slow in becoming angry.