Claim. No one in history — including Jesus, the apostles, and all martyrs — has yet entered heaven; the first people to enter must be the True Parents, after which others can follow.
Elaboration. SMM states the universal-exclusion claim explicitly: “Had there been no Fall, people who went to the spirit world would have been able to enter heaven by connecting with the core of God’s love and True Parents’ love. Instead, our journey to heaven has been deferred because throughout history, nobody had been able to attain that bond. People have become stranded in hell and paradise, which is why heaven has been empty. The people to enter heaven first must be the True Parents. If I were to say that heaven is empty, people would think I am demented, yet even Jesus could not enter heaven” (4.2.3. True Parents and the gates of Heaven, 140-45, 1986.2.1). The principle is family-foundation gating: “Our original ancestors should have grown through adolescence, established the ideal of love centered on God, become parents and bequeathed the seeds of true love. Then the first place they entered would have been heaven.” Until the True Parents complete that foundation, heaven has neither its first family nor its first citizen.
See also. csg-jesus-is-in-paradise-not-heaven