Matthew 10:22

Address of Tatian to the Greeks

For what reason, men of Greece, do you wish to bring the civil powers, as in a pugilistic encounter, into collision with us? And, if I am not disposed to comply with the usages of some of them, why am I to be abhorred as a vile miscreant?[5]

Clement of Alexandria Who is the Rich Man that Shall Be Saved?

For it is neither the faith, nor the love, nor the hope, nor the endurance of one day, but "he that endureth to the end shall be saved."[57]

Tertullian The Prescription Against Heretics

but the Christian; and no one is a Christian but he who perseveres even to the end.[20]

Tertullian On the Flesh of Christ

I am safe, if I am not ashamed of my Lord. "Whosoever," says He, "shall be ashamed of me, of him will I also be ashamed."[71]

Tertullian De Fuga in Persecutione

Unhappy, therefore, they who, by running away, will not suffer according to the divine command. "He who shall endure to the end shall be saved."[27]

Cyprian Epistle V

And the Lord also says, "He that endureth to the end, the same shall be saved."[5]

Cyprian Epistle XXXVI

saith the Lord. They have confessed Him "He that endureth to the end, the same shall be saved,"[3]

Cyprian Treatise I On the Unity of the Church

Confession is the beginning of glory, not the full desert of the crown; nor does it perfect our praise, but it initiates our dignity; and since it is written, "He that endureth to the end, the same shall be saved,"[58]

Cyprian Treatise IX On the Advantage of Patience

It is the wholesome precept of our Lord and Master: "He that endureth," saith He, "unto the end, the same shall be saved; "[27]

Cyprian Treatise XI Exhortation to Martyrdom Addressed to Fortunatus

Moreover, in the Gospel the Lord speaks, and says: "He that shall endure to the end, the same shall be saved."[55]

Constitutions of the Holy Apostles Book V

And, "He that endureth unto the end, the same shall be saved."[9]