Claim. Entry into the Kingdom of Heaven is mediated by membership in the realm of the royal family — a status acquired only after perfecting the Four Great Realms of Heart and the Three Great Kingships and then being lineage-connected to true-parents.
Elaboration. SMM closes off alternative entry paths: “How can the family be perfected? The family can be perfected by living the life of the Four Great Realms of Heart, the Three Great Kingships and the realm of the royal family. … And this is what the Kingdom of Heaven is, namely, the place where you go after having lived within the realm of the royal family. After you have lived there, you simply move or transmigrate naturally to the Kingdom of Heaven” (3.3. Perfecting the realm of the royal family, 244-48 1993.1.29). The lineage-mediation is explicit: “The only way to be connected to the realm of the royal family is when we become related by marriage through my sons and daughters” (238-48 1992.11.19). The royal-family status is therefore Pledge-3’s terminal payload — completing it is what makes the rest of the Pledge promises operable.
See also. csg-blessed-family-is-the-representative-family-of-heaven-and-earth, csg-realm-of-liberation-and-complete-freedom-fulfills-the-eighth-pledge