Ephesians 4:31-32 (NIV)
31Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice.
32Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.
John 16:8 (NIV)
8When he comes, he will convict the world of guilt in regard to sin and righteousness and judgment