Werent’ all the books of the New Testament written by those who Christ personally chose? Then didn’t He tell them to wait for the Holy Spirit who would bring all to their remembrance. And do they not all agree with each other. Then the references to Old Testament works and do they not all agree with all the other 66 books? Seems good start to me.
But that’s not sola scriptura. That’s tradition. See, this isn’t an argument between sola scriptura and tradition, but rather an argument between Tradition and tradition.
You are relying on the tradition as established by Luther, while I, and the other Catholics here are relying on the tradition as established by the magisterium in the late 4th century. The Canon was established as we see in the Vulgate including books like Maccabess et al.
You would ask us to throw away that canon as handed down then, in favour of a much later canon as established by Luther.
Prior to the establishment of the Canon, yes, not all the books that we have today were considered to be Canon. Including Hebrews which is a problem for your definition as authorship is unknown. In the end, what counts is not whether we consider the work to be inspired, but rather, what the Church has decided.