Claim. The Blessing is not a wedding among many; it is the historic moment in which true-parents and true children come together to fulfill the purpose-of-creation that Adam and Eve forfeited at the Fall.
Elaboration. SMM defines the Blessing minimally: “The Blessing signifies the True Parents and true children coming together to fulfill the purpose of creation” (1.1. What is the Blessing?, 19-73, 1967.12.27). Its context is the lost second generation: “Adam and Eve did not become one in God’s love. If they had, they would have formed a love relationship in which God could dwell … This would have been the Blessing” (ibid, 32-239, 1970.7.19). The Unification wedding is therefore “not simply a wedding through which a man and a woman come together and form a family … it sets a condition to indemnify the past and return joy to God” (ibid, 22-212, 1969.2.4). The Blessing is the original creation-event reattempted, with True Parents standing in for the failed first ancestors.
See also. true-parents, purpose-of-creation