An Outline on the Formation of the Canon of Scripture

The Bible was not "created" or imposed by a church council. Instead, the list of books was gradually recognized by the early Christian community. The church did not make the books authoritative; it simply acknowledged the authority the books already possessed because of their apostolic origins.

Key Phases of Formation

1. The Old Testament (The Foundation)

• Early Christians inherited the Jewish Scriptures (The Law, Prophets, and Writings).

• Jesus and the Apostles treated these books as the undisputed Word of God.

• The Debate: While there was agreement on the core books, there was a long-standing variation between the Hebrew Canon (shorter) and the Greek Septuagint (which included the "Apocrypha" or Deuterocanon). 

2. The New Testament "Core" (c. 50–130 AD)

• Very early on, two collections were circulating and universally accepted:

  • The Four Gospels: Matthew, Mark, Luke, and John were the only recognized accounts of Jesus by the mid-2nd century.

  • The Corpus Paulinum: A collection of Paul's letters was circulating as a unit by the early 2nd century.

3. The External "Push" (Marcion)

• A major catalyst for defining the list was the heretic Marcion (c. 140 AD).

• Marcion rejected the Old Testament and created his own "canon" consisting only of a chopped-up version of Luke and ten of Paul’s letters.

• The Result: The Church was forced to formally list the books it did accept to protect them from being cut or added to by heretics.

4. The Criteria for Acceptance

When deciding which books belonged in the New Testament, the early church used three main tests:

1. Apostolic Authority: Was it written by an Apostle or a close associate (e.g., Mark with Peter, Luke with Paul)?

2. Orthodoxy (Rule of Faith): Did the teaching match the standard beliefs passed down by the Apostles?

3. Catholicity (Usage): Was the book widely read and used by churches across the different regions (Rome, Asia Minor, Africa)?

The Final Consensus

• The "Disputed" Books: For a few centuries, books like Hebrews, Revelation, James, and 2 Peter were debated (the "Antilegomena").

• Resolution: By the 4th Century, the list stabilized. Athanasius of Alexandria provided the first list of the exact 27 New Testament books we use today in his Festal Letter of 367 AD, and later councils (like Carthage in 397 AD) ratified this consensus.