Matthew 5:21-24

And JESUS said, "You have heard that it was said to people long ago, 'Do not murder;' and 'Whoever commits murder will be punished.' But I say to you that whoever is angry with his brother without just cause will be condemned. And anyone who calls his brother an 'idiot' will be subject to the Council. And anyone who calls someone a 'fool' will be in danger of hell fire. Therefore if you bring your gift to the altar, and there remember that your brother has something against you, leave your gift there, and go your way. First be reconciled to your brother, and then come back and offer your gift."