Peter speaks of times of “the restoration of all things” (Acts 3:21) as being the time in between Jesus ascension to heaven and the time when He returns from heaven. During this time evil shall be destroyed and all things ruined by evil shall be restored. Thus we understand that in this present age the mission of the Church is to exhaust evil by destroying evil and restoring all things ruined by evil back to their originally intended state before the Fall. Such restoration then makes transformation possible. With mankind, for example, in Christ’s Incarnation the image of God in mankind is restored. This now makes possible our transformation in the likeness of God by the power of the Holy Spirit. Thus restoration is foundational and leads to transformation.
Also see Replace, Restitution, Theosis, and Transformation.