Claim. SMM identifies a progression of salvific methods: OT = sacrifice of material things, NT = faith in Jesus the Son, Completed Testament Age = attendance of the True Parents.
Elaboration. “The methods for fallen people to go back to God have differed according to the age. In the Old Testament Age, people could go to God by offering sacrifices; in the New Testament Age, it was by believing in Jesus, the son of God; and in the Completed Testament Age, people can go to God by attending the True Parents” (4.1.-true-children-should-go-through-the-change-of-lineage-and-rebirth, 20-340, 1968.7.20). Each method reflects the relational position of that age: servants offer material things, adopted children receive a savior-son, and true children attend parents. The CTA’s method of “justification through attendance” (ibid, 161-218, 1987.2.15) is thus not a mere intensification of faith but a qualitatively new mode of salvation appropriate to the parents’ age.
See also. csg-restoration-ascent-servant-to-parents, csg-true-parents-as-gods-embodied-form