Matthew 10:33

Shepherd of Hermas Vision Second

For the Lord hath sworn by His Son, that those who denied their Lord have abandoned their life in despair, for even now these are to deny Him in the days that are coming.[14]

Tertullian On Idolatry

But "whosoever shall be ashamed of Me in the presence of men, of him will I too be ashamed," says He, "in the presence of my Father who is in the heavens."[100]

Tertullian On the Resurrection of the Flesh

that is, shall flourish or revive, from death, from the grave-to teach you to believe that a bodily substance may be recovered even from the fire. Our Lord has declared that we are "better than many sparrows: "[85]

Cyprian Epistle XXX

so it is written, "Whosoever shall deny me before men, him will I also deny before my Father and before His angels."[19]

Cyprian Epistle LIV

And in the Gospel the Lord says, "Whosoever shall deny me, him will I deny."[41]

A Treatise Against the Heretic Novatian by an Anonymous Bishop

from that utterance of the Lord, where He says, "Whosoever shall deny me before men, him will I deny before my Father which is in heaven."[22]

Constitutions of the Holy Apostles Book V

For of such a one our Lord declared, saying: "Whosoever shall deny me before men, and shall be ashamed of my name, I also will deny and be ashamed of him before my Father which is in heaven."[10]

Martyrdom Of the Holy Confessors

For we have a Father in heaven whose will we follow, and He says: "He that shall confess Me before men, him will I also confess before My Father who is in heaven; but he that shall deny Me before men, him will I also deny before My Father and His angels."[6]

Origen Commentary on Matthew Book XII

So also he who has not denied himself but denied the Christ will experience the saying, "I also will deny him."[168]