Matthew 5:22
But I say unto you, That whosoever is angry with his brother, shall be liable to the judgment; and whosoever shall say to his brother, Raca, shall be liable to the council; but whosoever shall say, Thou fool, shall be liable to hell-fire.
Ephesians 4:31
Let all bitterness, and wrath, and anger, and clamour, and evil-speaking be put away from you with all malice.
Ephesians 6:4
And, ye fathers, provoke not your children to wrath, but bring them up in the instruction and discipline of the Lord.
James 1:19-20
Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath.