Didascalia Apostolorum
Didascalia on Early Christian Writings: the New Testament, Apocrypha, Gnostics, and Church Fathers: information and translations of Gospels, Epistles, and documents of early Christianity.
www.earlychristianwritings.com
Epiphanius Salamis 300s AD said it was written by the apostles like it said. So I believe it was written pre 70 AD, and is inspired scripture. It is a lot like the Didache which also internally dates to before 70 AD but Didascalia is a lot longer. It is on audiobook here
Here is chat GPT summary of the teachings of the text
The Didascalia Apostolorum presents itself as apostolic instruction, spoken in the collective voice of the apostles with Peter as chief spokesman, addressing how Christian communities are to live faithfully before God; it teaches that believers are no longer bound to the ritual requirements of the Mosaic Law, emphasizing instead moral obedience, repentance, mercy, and care for the poor, while portraying the bishop as a shepherd and physician who must govern gently, restore sinners, and guard the community from injustice; the text regulates church order, family life, sexual conduct, the roles of women and widows, almsgiving, and discipline, consistently stressing that authority exists for healing and salvation rather than punishment, and that Christian life replaces temple sacrifice with prayer, charity, and faithful endurance amid opposition.
It uses the word Catholic which means universal. There is no Mary worship in the text. It says Peter was buried in the Vatican
Chat GPT
In the first century, there was no “Vatican” as an institution and no St. Peter’s Basilica. The area now called the Vatican was simply Vatican Hill (Mons Vaticanus)—a low hill outside Rome’s sacred boundary (pomerium) on the west bank of the Tiber. It was largely non-urban, used for gardens, cemeteries (necropolis), and imperial leisure. Under Caligula and Nero, a large chariot-racing stadium—the Circus of Nero (or Circus of Caligula)—stood there. According to early Christian memory, Nero executed Christians in this area, and Peter was martyred nearby, traditionally buried in the adjacent necropolis. That grave became the focal point for later veneration, which—centuries later—led Constantine to build the first basilica over it (4th century).
Summary: In the first century, the “Vatican” was a geographic location tied to imperial Rome and early Christian martyrdom, not a church state or headquarters; its later significance grew because of Peter’s burial, not because it already held authority.