Let me clarify once more on Athanasius and these strange notions that
#1 - he is the Protestant's authority on determining their canon
#2 - that he thought the deuterocanonical books were non-Scripture
As I quoted earlier, he considered deuterocanonical books like Wisdom to be Scripture.
But of these and such like inventions of idolatrous madness, Scripture taught us beforehand long ago, when it said, "The devising of idols was the beginning of fornication, and the invention of them, the corruption of life." (quote from
Wisdom 14:12) (Athanasius,
Against the Heathen, #11)
Additionally, Athanasius' list includes Baruch and excludes Esther, which contradicts the Protestant canon that excludes Baruch and includes Esther.
Thirdly, Athanasius describes the deuterocanon
distinct from apocrypha:
But for greater exactness I add this also, writing of necessity; that there are other books besides these not indeed included in the Canon, but appointed by the Fathers to be read by those who newly join us, and who wish for instruction in the word of godliness. The Wisdom of Solomon, and the Wisdom of Sirach, and Esther, and Judith, and Tobit, and that which is called the Teaching of the Apostles [i.e. Didache], and the Shepherd. But the former, my brethren, are included in the Canon, the latter being [merely] read; nor is there in any place a mention of apocryphal writings. But they are an invention of heretics, who write them when they choose, bestowing upon them their approbation, and assigning to them a date, that so, using them as ancient writings, they may find occasion to lead astray the simple. (Athananasius,
Letter 39)
In other words, Athanasius considered these additional deuterocanonical books in a class something other than "canonical" Scripture yet not "apocryphal." In modern times, we are tempted to consider an ancient religious text as either one of two things: either canonical Scripture or apocryphal literature. Yet in Letter 39, Athanasius expressed a
third class of writing which he assigned to these Deuterocanonical books.
Take that third class of writing and compare to his quote above from the book of Wisdom which he clearly calls "Scripture." Therefore, Athanasius held to two classes of Scripture---one he describes as "canonical" and one not. So anyway, he considered the deuterocanonal books "Scripture" whether technically "canonical" (like Baruch), or some other class of Scripture (like the others).
For full article, see
Did Athanasius reject the Deuterocanon?