The Transfiguration of Christ offers a window into the future of the elect. By the power of the resurrected Christ, his followers are destined to become like him, glorified and transfigured in eternal life.
The season of Lent is ordered toward finding new life in Christ. And there are indeed very great promises attached to this new life! St. Paul teaches that we await our Savior, who will “change our lowly body to conform with his glorified body” (Phil. 3:21). He is here speaking of the second coming of Christ and the general resurrection of the dead. That is the great hope to which Lent directs us: the resurrection of Christ on Easter Sunday, which foreshadows that moment at the end of history when we too shall be raised from the dead by Christ.