Isaiah 14:1 ... prophesizes that "strangers (hager) shall join (venilvah) them and shall cleave to the House of Jacob" ... these passages [he cites others before this that aren't viewable on Google books] address the eschatological age, when the earth is filled with knowledge of the Lord, and a new cosmic order is being created ... The first and only passage in the Tanakh that would seem to refer clearly to the social integration of the gentile in the historical present is Esther 9:27: "The Judeans undertook and irrevocably obligated themselves and their descendants, and all who might join them, to observe these two days in the manner prescribed and at the proper time each year." Here we have Judeans (yehudim), and gentiles who attach themselves (nilvim aleihem) to them; all alike constitute the community of those bound by the law of the Purim festival.
https://books.google.com/books?id=cvWq4 ... en&f=false
Also, now that I'm at the library and not at work I can use Eisenman's translation of the CD passage in question, which I think is better than Vermes. (It also refers to attaining eternal life and may possibly reflect the concept of the Primal Adam, which the Jewish Encyclopedia notes "is of Judeo-Christian origin ... [and] seems to have been taught in the original form of the Clementine literature").
So not only does the Damascus Document refer to a singular Messiah, "the Way," and "the New Covenant" in a place called Damascus, it alters the OT to support the inclusion of gentiles, which, along with the interpretation of "priests" as penitents, is in keeping with the portrait of James in Hegesippus, who wore priestly clothes and "was frequently found upon his knees begging forgiveness for the people, so that his knees became hard like those of a camel, in consequence of his constantly bending them in his worship of God, and asking forgiveness for the people" and that "he became a true witness, both to Jews and Greeks, that Jesus is the Christ."And for them that hold fast to it, there will be Victorious Life, and all the Glory of Adam will be theirs, which God established for them by the hand of the prophet Ezekiel, saying: "The Priests and the Levites and the Sons of Zadok, who kept the service of the Temple, when the Sons of Israel strayed from me, will offer me the fat and blood." "The Priests" are the Penitents of Israel, who went out from the Land of Judah and "the Joiners" [nilvim] with them. And "the Sons of Zadok" are the Elect of Israel, called by name, who will stand up in the Last Days."