1 John 3:15
Whoever hates his brother, is a murderer: and you know that no murderer has eternal life abiding in him.
Matthew 18:15
And if your brother sin against you, go and tell him of his fault between you and him alone; if he hear you, you have gained your brother.
Ephesians 4:26
Be angry, and yet do not sin: let not the sun go down on your wrath,
Ephesians 4:31
Let all bitterness and anger and wrath and clamor and impious speaking be put away from 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
He that hates his brother is in darkness, and walks in darkness; and he knows not whither he goes, because darkness has blinded his eyes.