Matthew 5:22
But I tell you, that every one who is angry with his brother shall be subject to the judgment; and whoever says to his brother, Worthless fellow, shall be subject to the Sanhedrim; and whoever says, You fool, shall be subject to the hell of fire.
Ephesians 4:31
Let all bitterness, and wrath, and anger, and clamor, and blasphemy, be banished from among you, with all malice.
Ephesians 6:4
And, fathers, provoke not your children, but bring them up in the instruction and admonition of the Lord.
James 1:19-20
Understand, my beloved brothers, and let every man be swift to hear, slow to speak, slow to anger;