Tertullian, in To His Wife, discusses Christian marriage between a man and woman. The need for the institution to procreate and to find comfort. And in support of the apostle Paul that it is better to marry than to burn. He looks at the spiritual significance of marriage and what our eternal relationship is to our spouse. Tertullian provides various recommendations regarding marriage.

One of the great early Christian writings of the second century, The Demonstration of the Apostolic Preaching is a book all true believers can learn from. In writing to his friend, Irenaeus unfolds the Christian faith by quoting extensively from the Old Testament.

The Apology (Latin: Apologeticum or Apologeticus) is Tertullian's most famous work, consisting of apologetic and polemic. In this book, Tertullian defends the Christian Church, demanding legal toleration and that Christians be treated as all other sects or religions of the Roman Empire. It is in this treatise that one finds the phrase: "The blood of the martyrs is the seed of the Church."

This was written by our author in confutation of certain heretics who denied the reality of Christ’s flesh, or at least its identity with human flesh - fearing that, if they admitted the reality of Christ’s flesh, they must also admit his resurrection in the flesh; and, consequently, the resurrection of the human body after death.

The Didache (translated literally as ‘Teaching’) is an extensive and detailed Christian text dated by experts to around the first century, making it the oldest intact catechism. The Didache has been a source of great interest to devout Christians, theology students, and historians alike since its discovery and contains a great amount of information, rites, and references in connection to the Christian faith.