Matthew 5:23

Irenaeus Against Heresies Book IV

For by the gift both honour and affection are shown forth towards the King; and the Lord, wishing us to offer it in all simplicity and innocence, did express Himself thus: "Therefore, when thou offerest thy gift upon the altar, and shalt remember that thy brother hath ought against thee, leave thy gift before the altar, and go thy way; first be reconciled to thy brother, and then return and offer thy gift."[237]

Shepherd of Hermas Similitude Ninth

Will not the Lord, therefore, because of this conduct of yours regarding His Spirit, act in the same way, and deliver you over to death? Assuredly, I say, he will do the same to all those whom He shall find retaining a recollection of offences.[54]

Tertullian Of Patience

if the absence of patience makes you tenacious of a wrong? No one who is at variance with his brother in his mind, will finish offering his "duteous gift at the altar," unless he first, with intent to "re-conciliate his brother," return to patience.[125]

Five Books in Reply to Marcion

Peace with his brother:[269]

Cyprian Epistle XXVII

You have done uprightly and with discipline, beloved brethren, that, by the advice of my colleagues who were present, you have decided not to communicate with Gaius the presbyter of Didda, and his deacon; who, by communicating with the lapsed, and offering their oblations,[2]

Cyprian Treatise XII Three Books of Testimonies Against the Jews

Of this same thing in the Gospel according to Matthew: If thou wouldest offer thy gift at the altar, and there rememberest that thy brother hath ought against thee; leave thou thy gift before the altar, and go; first be reconciled to thy brother, and then come and offer thy gift at the altar."[384]

Victorinus Commentary on the Apocalypse of the Blessed John

But we perceive that the golden altar is thus called heaven, by the testimony that our Lord bears to it; for He says, "When thou bringest thy gift to the altar" (assuredly our gifts are the prayers which we offer), "and there rememberest that thy brother hath ought against thee, leave there thy gift before the altar."[37]

Didache

2. But let no one that is at variance[126]

Constitutions of the Holy Apostles Book II

But our Lord and Saviour Jesus Christ says in the Gospels: "If thou bring thy gift to the altar, and there rememberest that thy brother hath ought 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 to God."[233]