If thou art offering thy gift upon the altar, and there remember that thy brother hath aught against thee, leave there thy gift before the altar, and go thy way, first be reconciled to thy brother, and then come and offer thy gift. Be well-minded to thine adversary quickly, while thou art in the way with him; lest the adversary deliver thee to the judge, and the judge deliver thee to the officer, and thou be cast into prison. Verily I say unto thee, thou shalt not come out thence, till thou hast paid the last farthing (Matt. 5:23-26). To be "reconciled to one's brother" is to shun enmity, hatred, and revenge; that it is to shun them as sin is evident. The Lord also teaches in Matthew:

All thing whatsoever ye would that men should do to you, do ye even so to them; for this is the Law and the Prophets (7:12);

thus that we should not do evil. He teaches the same in many other places. The Lord also teaches that to be angry with one's brother or the neighbor rashly, and to hold him as an enemy, is also to commit murder (Matt. 5:21-22).