45:1.4

In passing through the seven mansion worlds, you will also progress through these cultural and social spheres of increasing morontia contact. When you advance from the first to the second mansion world, you will become eligible for a visitor’s permit to transitional headquarters number two, the morontia world, and so on. And when present on any one of these six cultural spheres, you may, on invitation, become a visitor and observer on any of the seven surrounding worlds of associated group activities.