38:7.5

When assigned to a planet, cherubim enter the local courses of training, including a study of planetary usages and languages. The ministering spirits of time are all bilingual, speaking the language of the local universe of their origin and that of their native superuniverse. By study in the schools of the realms they acquire additional tongues. Cherubim and sanobim, like seraphim and all other orders of spirit beings, are continuously engaged in efforts at self-improvement. Only such as the subordinate beings of power control and energy direction are incapable of progression; all creatures having actual or potential personality volition seek new achievements.