1 John 3:15
Every one that hates his brother is a murderer; and we know that no murderer has eternal life continuing in him.
Matthew 18:15
But if your brother sins against you, go and reprove him between you and him alone. If he hears you, you have gained your brother.
Ephesians 4:26
Be angry and sin not; let not the sun go down on your wrath,
Ephesians 4:31
Let all bitterness, and wrath, and anger, and clamor, and blasphemy, be banished from among you, with all malice.
1 John 2:9
He that says he is in the light, and hates his brother, is in darkness till now.
1 John 2:11
but he that hates his brother is in darkness, and walks in darkness, and knows not where he goes, because the darkness has blinded his eyes.