Since it was not known if Paul wrote it it was placed between Pauls epistles and the general epistles.
But the order is not divinely inspired. Unless you want to put divine inspiration on folks like Augustine, and I hope you don't.
The chapters and verse numbers are not inspired either, they came about in the middle ages for convivence. I think it was about the 11th century.
There were different orders of New Testament books in different canonical lists in church history. Check out F.F. Bruce book on Canonization of the Bible.
I suppose is it alright to have a personal view that God was behind how the current order exists in most bibles but it is not something you can argue for with any authoritative support from scriptures. And you would be on dangerous ground if you attributed the same level of inspiration on men like Augustine (who had something to do with it) as you would for Paul.
If you study Paul's letters carefully, you will realized he often used 3 time periods to denote how the Body of Christ, comprising of both believing Jews and Gentiles, are to view the books of the NT.
I like to use Ephesians 2 KJV as an illustration of all 3 time periods.
7 That
in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus.
8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
9 Not of works, lest any man should boast.
10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
11 Wherefore remember, that ye being in
time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands;
12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
13
But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
These are
- Time past (Matthew to Acts)
- But now (Romans to Philemon)
- The ages to come (Hebrews to Philemon)
I see the order of the books as significant to how one should study the Bible.
In time past, God sent Jesus to the lost sheep of the House of Israel (Matthew 15:24, Romans 15:8), but as Matthew to Acts goes, the nation rejected him, and hence cast into blindness and am now an enemy to God.
But now, Romans is the first book that has doctrine to the Body of Christ, and
is appropriately titled since Rome was the huge Gentile power during the time of Jesus. It is no coincidence that Paul, which also the Roman name of Saul, explained in Romans how, thru the fall of the nation Israel, salvation has now come to us gentiles (Romans 11:11)
Philemon marked the last book that has doctrine written to us, and some of us believe that the Body of Christ will be raptured into heaven before the Tribulation begins.
After we are gone from this earth, God will return to deal with the nation Israel once again
in the ages to come. What I am saying here is that
it is again no coincidence that the very first book after Philemon is also appropriately titled "Hebrews", which denote the Israelites, and how that book, together with James, Peter and John epistles, are all directed to the nation Israel once again.
All these books are to urge the nation Israel to endure the Tribulation to the end, before receiving their salvation when Jesus comes back for the nation in his 2nd coming, as Peter prophesied in Acts 3:19-21 and 1 Peter 4.