Matthew 5:22-24

But I’m telling you, if you hold anger in your heart toward a fellow believer, you are subject to judgment. And whoever demeans and insults a fellow believer is answerable to the congregation. And whoever calls down curses upon a fellow believer is in danger of being sent to a fiery hell. “So then, if you are presenting a gift before the altar and suddenly you remember a quarrel you have with a fellow believer, leave your gift there in front of the altar and go at once to apologize to the one who is offended. Then, after you have reconciled, come to the altar and present your gift.