Book 6 portrays the Blessing as more than a family rite. It is a mechanism for reordering the relation between the physical and spirit world.
That is why the chapter speaks in equalization language. The Blessing is presented as a way that broken historical, familial, and spiritual gaps can be brought onto a new footing through True Parents.
Whether one accepts the claim or not, it is a bigger claim than ritual purity or church membership. It frames the Blessing as a structural intervention in how worlds, families, and lineages are aligned.