Which raises the question as to why you use the Catholic NT Canon, but refuse to use the Catholic OT canon.
You can’t point to one source as the authority for the NT and then turn away for the OT. It doesn’t work like that. If you accept the Catholic church has the authority to set the NT canon (which you do), then the rest follows from there.
“You can’t point to one source as the authority for the NT and then turn away for the OT.”
I don’t point to the Catholic church as a source of authority for either. In fact, I’m certain that I’ve disputed the authority of the Catholic church on the matter in this very thread.
If the Catholics have canonized the same NT books that the rest of Christians accept as authoritative by our own standards, then it is a happy coincidence, as far as I’m concerned. At least that is one less thing for us to disagree about.