Claim. The messiah cannot fulfill his mission alone because he must come as a True Parent — which requires finding the only-begotten daughter and marrying her so the vertical God and horizontal parents can produce children on earth.
Elaboration. SMM argues that since the first ancestors fell and became false parents, restoration requires True Parents — and only the Messiah can occupy that position. But ‘he cannot do it alone. He must come as a man representing the True Parent.’ Jesus’s claim to be the only-begotten Son of God means there must also be an only-begotten daughter; ‘when their mutual attraction matures’ they should marry, with God rejoicing as vertical parent and the couple as horizontal parents who give birth to children (5.1. The two tablets of stone and).
The exegetical anchor is Jesus’s late self-description as the bridegroom and his followers as the bride — SMM reads this as confession that Jesus did not complete the marital dimension during his earthly life, leaving Christianity to wait two thousand years for the consummated wedding (the blessing, ‘the feast of the Lamb’ from Revelation 19). ‘There was something Jesus most needed to have, even if it meant abandoning the nation of Israel and Judaism. What was that? It was a woman.’
SMM grounds the Old Testament typology: the pillars of fire and cloud leading Israel symbolized man and woman, prefiguring True Parents; the two tablets of stone given to Moses on Sinai symbolized Adam and Eve as central figures completing God’s will, which is why they were placed in the Ark of the Covenant. This typological reading is distinctive and load-bearing.
This is the central christological innovation of UC theology. Mainstream Christianity holds Jesus’s mission was completed on the cross; SMM holds it was bifurcated by the crucifixion, leaving the marital/family/lineage work for the Second Advent. Critics from classical christology will engage on the exegetical merits — particularly whether Jesus’s bridegroom self-references in the gospels and Revelation refer to a literal human marriage or to eschatological union with the Church. Worth pairing with messiah-completes-physical-marriage-and-family-salvation from Hendricks for the systematic version.