Matthew 5:21-22 NIV
“You have heard that it was said to the people long ago, ‘You shall not murder, and anyone who murders will be subject to judgment.’ But I tell you that anyone who is angry with a brother or sister will be subject to judgment. Again, anyone who says to a brother or sister, ‘ Raca ,’ is answerable to the court. And anyone who says, ‘You fool!’ will be in danger of the fire of hell.
NIV: New International Version