30:4.17

Sometimes all training worlds of mortal residence are called universe “mansions,” and it was to such spheres that Jesus alluded when he said: “In my Father’s house are many mansions.” From here on, within a given group of spheres like the mansion worlds, ascenders will progress individually from one sphere to another and from one phase of life to another, but they will always advance from one stage of universe study to another in class formation.