Matthew 5:22

Irenaeus Against Heresies Book IV

and, "he that is angry with his brother without a cause, shall be in danger of the judgment."[208]

Irenaeus Against Heresies Book IV

), used to express Himself thus: "But I say unto you."[560]

Clement of Alexandria The Instructor Book II

And if "he that calls his brother a fool be in danger of the judgment," what shall we pronounce regarding him who speaks what is foolish? Is it not written respecting such: "Whosoever shall speak an idle word, shall give an account to the Lord in the day of judgment? "[124]

Tertullian On Prayer

before we compose whatever of discord or offence we have contracted with our brethren.[69]

Tertullian Of Patience

, nor to say "fool"[68]

Cyprian Epistle LIV

and again the Lord says in His Gospel, "Whosoever shall say to his brother, Thou fool; and whosoever shall say, Raca, shall be in danger of the Gehenna of fire,"[14]

Cyprian Treatise XII Three Books of Testimonies Against the Jews

Of this same thing in the Gospel according to Matthew: "He who shall say to his brother, Thou fool! shall be liable to the Gehenna of fire."[462]

Constitutions of the Holy Apostles Book II

For if he that calls one of the laity Raka,[161]

Constitutions of the Holy Apostles Book II

Be ye therefore righteous judges, peacemakers, and without anger. For "he that is angry with his brother without a cause is obnoxious to the judgment."[229]

Constitutions of the Holy Apostles Book VI

He who then forbade murder, does now forbid causeless anger.[139]

The Second Epistle of Pope Fabian

Who would ever consider the man who says to his brother "Thou fool" worthy of hell-fire, were it not that the Truth Himself told us so?[16]