Irrelevant.
SDA say that Saturday is the day of worship, but they don’t speak for all of Christendom.
And yet St. Jerome deferred to the authority of the CC and kept them in his Vulgate.
No one knows who wrote Hebrews, or, really,* any* of the books of the OT.
Claiming to be inspired is irrelevant. The Koran claims to be inspired of God, too. And yet we don’t presume that just because something says it’s inspired that this makes it so.
It’s only as ridiculous as the story of a talking donkey.
Jesus made a botanical inaccuracy when he said the mustard seed is the smallest of seeds.
Should we throw out the gospel where there is this botanical inaccuracy?
My understanding is that the DSS included the deuterocanon.
No. They are included. Sirach, Baruch, Tobit are prophets.
Then we’d all have to throw out Song of Songs, Ecclesiastes, Esther, Obadiah, Zephaniah, Judges, 1 Chronicles, Ezra, Nehemiah, Lamentations and Nahum—none of which are quoted in the NT. And we’d have to add Enoch, the Assumption of Moses and maybe some pagan poets—which are quoted in the NT
Then you have to exclude 1 Samuel which states that "Saul went into a cave to relieve himself’.
That’s very, very "unbecoming of God’s authorship.’
It is a list that would throw out a whole lot of books in your Bible, drblank, and add a whole bunch of books, including the Koran.
And, I would add, it’s completely arbitrary.
I could just as well say, “Jesus 1 and 2 Kings, Nehemiah and Malachi when he quotes Luke 24:44 and Matthew 23:35”
And I could say that the OT must be written in Greek in order for it to be considered inspired.
And I could say that anything written about talking animals needs to be rejected.
My list would be as arbitrary as yours.