Here is a thorny question that Christians seldom consider, but it is pretty important: How do we know if the Apostle Peter actually wrote 2 Peter? Let us take a deep dive into exploring the answer.
Christians have long believed that there is an authoritative New Testament “canon”, or rule, by which the teachings of the church can be measured. Protestant scholars speak of the “self-authenticating” nature of Scripture, and Roman Catholic and Eastern Orthodox scholars speak of the magisterial authority of popes and bishops that have received the twenty-seven books that we have in our New Testament canon.
However, many Christians wrongly assume that the table of contents in their Bibles were somehow dropped down out of heaven, like the tablets of Moses at Mount Sinai. Rather, the development of the New Testament canon was a process that happened over many decades during the history of the early church. The 2nd century heretic, Marcion, had first developed his own list of authoritative New Testament books, but others in the church believed that Marcion’s list was far too restrictive. Others proposed that certain popular books read in church could be included within the New Testament canon, but doubts arose as some questioned the apostolic authenticity of those certain books. It was not until the last quarter of the 4th century C.E. when the church across the Roman empire finally received our list of twenty-seven books.
How then was a book received into the New Testament canon? Generally, a New Testament book needed to conform to the “rule of faith,” a common body of teaching that could be traced back to the early apostles of the Christian movement. Furthermore, a New Testament book must have been authored by one of those early apostles, or someone who moved within that early circle of apostles.