When I was doing my degree, we had a student who was convinced Paul wrote the Letter to the Hebrews (as a kid in Church it was always 'St Paul's letter to', can't remember when that was dropped.
Every tutor said no, he didn't, but the guy dug his heels in and would not be moved.
If your into Christian metaphysics, Christian Gnosis, then the Letter to the Colossians is always close at hand:
The Hymn of Colossians (1:15-20):
(First verse)
He who is the image of the invisible God,
Firstborn before all creation,
because in Him all things were created —
things in heaven and things on earth,
things visible and invisible,
whether thrones or dominions,
whether principalities or powers —
they have all been created through Him and for Him
(Link)
He indeed is before all things,
and they all cohere in Him;
He is also the head of the body, the church
(Second verse)
He is the beginning,
Firstborn from the dead,
that He might be preeminent in all things,
because in Him it was decreed that all the fullness should
take up residence
and that through Him, [God] should reconcile all things
to Himself,
having made peace through the blood of His cross —
[through Him], whether those on earth or those in heaven
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Many scholars hold Colossians to be not by Paul's hand, but possibly an amanuensis, and date it as early as the 50s, as late as the 90s. So hold somewhere towards the beginning of that era, when Paul was in prison, as it has close ties with Philemon (authentically Paul) and Ephesians (which, like Colossians, is questioned).
Two things strike me, from the above –
The first is this is a classic statement from which all Christian metaphysics and theology can be unpicked. The first verse is Christ the Creator (Logos), the second is Christ the Redeemer.
The thing is, scholars see in the above verses a hymn of the early Church, and that the author knew and folded the hymn into the letter for the edification of the congregation at Colossae.