Matthew 5:22-24

22But I tell you that everyone who is angry with his brother shall be subject to judgment. And whoever says to his brother, ‘Raca’ shall be subject to the council; and whoever says, ‘You fool!’ shall be subject to fiery Gehenna.

23“Therefore if you are presenting your offering upon the altar, and there remember that your brother has something against you,

24leave your offering there before the altar and go. First be reconciled to your brother, and then come and present your offering.