Since they are “in” the Canon of Scripture they are accepted as the divinely inspired Word of God. So questions of authorship are merely academic.
Actually, I’d suggest otherwise. To truly understand the faith handed down to us from the Apostles, it’s important that we understand how that transmission took place. Otherwise, we are closing our eyes to the history of the early Church. Keep in mind that Jesus Christ’s crucifixion took place around 33 AD (30-36 AD for a good range). The earliest books of the Bible (i.e., Galatians, 1 and 2 Corinthians, 1 Thessalonians, Philippians, Romans, Philemon) were written between 50 and 60 AD. The first gospel, Mark, dates to sometime after 60 AD, it’s believed.
What all this means is that Christianity was an oral tradition for about two decades before anyone wrote down its teachings. Jesus himself taught by preaching (not by any writing of which we’re aware), and his disciples did as well. We have descriptions of what took place in the early Church in the letters of Paul (e.g., Galatians 1-2; 1 Corinthians 11) and Acts. In that the Apostles were still alive and preaching, they themselves were the repository of truth. It’s only as time went on and the disciples themselves died (many to martyrdom) that we see the emergence of written Christianity.
Original authorship is actually a pretty critical issue in other parts of the Bible. Before modern times, copying manuscripts onto new pages was the only way that they were preserved for posterity. And the scribes who did the copying may not have always been totally neutral in doing so. 1 Corinthians 14:33b-36 is generally thought to be an “interpolation” inserted by scribes copying Paul’s epistle. In that that “interpolation” is one of the key scriptural verses employed in the argument that women cannot be ordained, it’s very important that we understood that the editorial process in constructing the canon resulted in messages that may not have been intended by the original authors.
- [14:33b–36] Verse 33b may belong with what precedes, so that the new paragraph would begin only with 1 Cor 14:34. 1 Cor 14:34–35 change the subject. These two verses have the theme of submission in common with 1 Cor 14:11 despite differences in vocabulary, and a concern with what is or is not becoming; but it is difficult to harmonize the injunction to silence here with 1 Cor 11 which appears to take it for granted that women do pray and prophesy aloud in the assembly (cf. 1 Cor 11:5, 13). Hence the verses are often considered an interpolation, reflecting the discipline of later churches; such an interpolation would have to have antedated our manuscripts, all of which contain them, though some transpose them to the very end of the chapter.
The issue of pseudoepigrapha (authorship attributed to one author by someone other than that author) is also important in understanding what particular Biblical figures were saying. Due to differences in composition and context, it’s generally held by Bible scholars that Paul is not the author of 1 and 2 Timothy and Titus, but that the work was attributed to him by people following his teachings at a later date. As such, when we are performing exegesis of what Paul taught, it’s important that we understand what was genuinely his writings. This is not to say that those other books are to be discounted, but that they reflect development of the Christian tradition after Paul’s original writings.