There is a contrast between Christ, object of promise and prophecy, and Christ revealed in the fullness of His person as beginning and foundation (having accomplished His work) of the new creation, its head, filling all things, having re-established the relationship between God and them, a relationship ruined by sin; and at the same time beginning, foundation, and head of the Church, which He reconciled in the body of His flesh through death, having united it, quickened in Himself, by the Holy Ghost to Himself as His body. These two things constitute the mystery in its whole extent.