Makes sense, since the common language of the day was Greek. But how many of those quotes are from the Apocrypha?
Note the difference in the number of books in second and third divisions and since he did not name them one by one, one can only speculate whether they are condensed form of 24 Hebrew books or not.
The Hebrews most certainly did combine books. Their total was/is 24 but the content is the same. The fact is, as stated in a previous post, the Jews always considered what eventually became their canon to be inspired of God. The other books were held in high regard but were not considered inspired.
My understanding is that the Septuagint contained the deuterocanonical books.
Here's a listing of NT allusions to the deuterocanonical books specifically.
The most compelling parallel is found below:
In Hebrews 11:35 [It's worth reading this in the context of the entire chapter] we are encouraged to emulate Old Testament heros in these words,
Hebrews 11:35"Women received their dead by resurrection. Some were tortured, refusing to accept release, that they might rise again to a better life"
This is a reference to the seven sons of the Jewish mother whose martyrdom and that of her sons is recorded in 2 Maccabees, one of the books dropped out by Protestants. There is no story like this in the Protestant Bible, so the author of Hebrews was clearly referring to 2 Maccabees 7 and anyone who reads the story of their torture and death will remember it always. It records, how one by one the seven sons died a tortuous, cruel death, proclaiming that they would be vindicated in the resurrection.
2 Macc. 7:9, 20-23, 29"At the point of death he said: 'You accursed fiend, you are depriving us of this present life, but the King of the world will raise us up to live again forever. It is for his laws that we are dying'... The mother was especially admirable and worthy of honorable memory. Though she saw her seven sons perish within a single day, she bore it with good courage because of her hope in the Lord. She encouraged each of them . . . [saying], 'I do not know how you came into being in my womb. It was not I who gave you life and breath, nor I who set in order the elements within each of you. Therefore the Creator of the world, who shaped the beginning of man and devised the origin of all things, will in his mercy give life and breath back to you again, since you now forget yourselves for the sake of his laws,'" telling the last one, "Do not fear this butcher, but prove worthy of your brothers. Accept death, so that in God's mercy I may get you back again with your brothers" .