Michael Kruger continues his ten part series by pointing out that at the time the New Testament was being written the authors considered other contemporary writings as Scripture.
One of the most controversial issues in the study of the New Testament canon is the date when these books were regarded as Scripture. When were these books first used as an authoritative guide for the church? Critical scholars will argue that these books were not written to be Scripture and were not even used as Scripture until the end of the second century.
But one of the most basic facts that Christians should know is that some New Testament writers actually quote other New Testament writers as Scripture. This demonstrates that the concept of a new corpus of biblical books was not a late development, but one that seems to be present in the earliest stages of Christianity.
Read the whole post at Canon Fodder.