Well, there was the Hebrew and Aramaic OT, which existed in the Masoretic texts, and the Greek OT, which was the Septuagint. By Jesus's day, they were all using the Septuagint which contained the Deuterocanon while the Masoretic texts didn't. Luther asked the Jews of his day which they were using and so he went with the Masoretic texts and was able to toss things like Macabees where they pray for the souls of the dead. Fun fact: Luther also wanted to axe the Epistle of St. James. Modern scholarship, including the Dead Sea Scrolls proves that the Hebrews in Jesus' day were using the Septuagint, just like Church Tradition said. The Deuterocanon is really good, and I especially like Sirach and Tobit. The history of the Biblical Canon is really interesting, and such a shame that it is virtually unknown in Protestant circles. Even now, the Orthodox and Copts have different Canons of Scripture with some Ethiopians still using Enoch in their OT.