Claim. Jesus and the Holy Spirit fulfilled only the spiritual True-Parents mission. Physical True Parents — required to remove original-sin from lineage and complete physical rebirth — require Christ’s return in the flesh together with his Bride forming a perfect earthly trinity with God.
Elaboration. Per dp-4-rebirth-and-trinity §4.1.3 and §4.2: “since human beings fell both spiritually and physically, we must be cleansed of original sin by being born again both spiritually and physically. Christ must return to earth to grant physical salvation, which is to be realized through our physical rebirth.”
Structural reason: “the resurrected Jesus and the Holy Spirit… could form only a spiritual trinity. They could fulfill only the mission of spiritual True Parents.” A spirit-only pair cannot give physical rebirth — the medium is missing.
Completion: “Christ must return in the flesh and find his Bride. They will form on the earth a perfect trinity with God and become True Parents both spiritually and physically. They will give fallen people rebirth both spiritually and physically, removing their original sin and enabling them to build trinities on earth.”
This is the positive-mechanism counterpart to Ch 4’s “cross grants spiritual salvation only” (dp-cross-grants-spiritual-salvation-only-not-physical) and Ch 5’s empty-kingdom doctrine. Ch 4 names the gap; Ch 7 names the mechanism — Christ-in-flesh-with-Bride forming earthly trinity. The bridegroom-and-Bride framing (Matt 9:15, Eph 5:32, Rev 19:7) is DP’s NT description of the Second Advent.
Mainstream already-but-not-yet eschatology (Vos, Ridderbos) holds Christ’s atonement was sufficient — direct counter.
See also. dp-cross-grants-spiritual-salvation-only-not-physical, dp-second-advent-required-to-complete-physical-salvation, dp-trinity-is-four-position-foundation-god-with-true-parents