The Epistle of Barnabas is commonly categorized among the Apostolic Fathers alongside the writings of St. Clement, St. Ignatius, and St. Polycarp. This epistle can be dated near the end of the first century and was considered important by many of the early church fathers. It was most likely written to new Jewish believers in response to the growing heresy that the Old Law was still necessary for salvation.

Glory to God for the men of old who endured the persecutions of this world with joy and faith. Much can be learned from those who have looked death in the face and yet remained true to the Lamb of God who takes away the sins of the world.

The First Epistle to the Corinthians claims no author except "the Church of God which sojourns at Rome", but the early church unanimously attributed it to Clement of Rome. This letter had a profound impact on the early church and was commonly read aloud to congregations even through the fourth century - a fact that demonstrates the letter's importance to the early believers and the endurance of the call to repentance found within its pages.

Written by Eusebius, the bishop of Caesarea, The History of the Church is the pioneering fourth-century work which details the chronological history of early Christianity from the time of Christ to Constantine. This monumental work of Christian history stands apart from other contemporary histories as the first full-length record of early Christianity from a Christian point of view. While sometimes criticized as biased and inaccurate, The History of the Church nevertheless provides an indispensable perspective upon the foundations of the Christian church and religion.

This classic text gives a broad overview of the early Christian church, how it was formed, and how it dealt with the Roman empire, which was at first hostile to Christianity, and then under Constantine the Great how it came to embrace the new faith. The author, George Hodges, also examines the many heresies that beset the church from within, and the various figures that would defend the correct definition of the faith.