See: THE TEMPLE SCROLL, and THE NEW JERUSALEM SCROLL. See the quote from Black for item 23 below. "The world is to be restored to its "paradisiacal" state before the Fall; the glory which Adam lost as the Fall is to be restored to the renewed mankind, sin and evil are to be banished from the earth, and a renewed and obedient mankind are to live on for a thousand generations, an expression which in fact practically means "eternal" life. Thus Adam is restored to his state before the Fall and lives forever in his new Paradise. The nature of this eternal life is given distinctive expression in the scrolls by the idea that the loyal covenanters will enjoy an angelic existence. They are not only to live like angels and consort with angels, but also to become as angels. The thought has no doubt developed out of the idea of God coming to dwell with men with His holy angels in a restored Temple in Jerusalem." BLACK p. 139. He quotes l QS iv.23, cf CD v. 55-6: "God in His wonderful mysteries forgave their iniquity and built them a sure house in Israel. They that hold fast to it are destine for the life of eternity and all the glory of Adam is theirs." And CD vii (xix).5-6: "all those who walk in these things in the perfection of holiness the Covenant of God standeth fast to preserve them to a thousand generations." Reference to a thousand generations is equivalent to eternal, "olam." BLACK points out on page 139, that the belief "in a doctrine of immortal or eternal life is in the scrolls, and "This is implied by the contrast between "joy in eternal life", and the "fire of dark regions". It is true the concept of "eternity" is q quite different one in modern thought from the ancient Hebrew idea, but in the case of the "(ever)lasting life" of the scrolls, we are almost certainly intended to take the term in the meaning of a life without an cessation by death." BLACK p. 139.
A characteristic feature of the scrolls is the apocalyptic elements, including the "earthly stage where the final conflict is fought out." the whole conflict is lifted up on the plane of the supernatural by the part played by the angelic hosts and Israel's protecting angels, among them Michael himself. This is stated in so many words in the lines describing the final conflict ..a congregation of gods and an assembly of men, the sons of light, and the lot of darkness will fight together the trumpets of gods and men on the Day of Destruction. Where the "Prince of Light" wil "have brought the angel Mastema to the pit." after a reference to the subduing of the Prince of the dominion of darkness, God sends the glorious angel, Michael , with eternal light, to give light to Israel." BLACK p. 154.
In conjunction with the Damascus Document, and in particular, the "the prominence in the expectation of the sect of the idea of a New Temple in a restored Jerusalem, .the expected Kingdom of God (or New Creation) of eternal duration on the present earth, with Jerusalem (and the Temple) as its center. And this new creation, innocent of all evil, reproduces upon earth the state of Eden before the Fall. BLACK p. 136.