Matthew 5:22-24

But I tell you, if you are angry with a brother or sister, you will be judged. If you say bad things to a brother or sister, you will be judged by the council. And if you call someone a fool, you will be in danger of the fire of hell. “So when you offer your gift to God at the altar, and you remember that your brother or sister has something against you, leave your gift there at the altar. Go and make peace with that person, and then come and offer your gift.