“For he who is not able to abide the law of a celestial kingdom cannot abide a celestial glory. And he who cannot abide the law of a terrestrial kingdom cannot abide a terrestrial glory. And he who cannot abide the law of a telestial kingdom cannot abide a telestial glory; therefore he is not meet for a kingdom of glory. Therefore he must abide a kingdom which is not a kingdom of glory” (Doctrine and Covenants 88:22-24).
“Therefore, when they are out of the world they neither marry nor are given in marriage; but are appointed angels in heaven, which angels are ministering servants, to minister for those who are worthy of a far more, and an exceeding, and an eternal weight of glory. For these angels did not abide my law; therefore, they cannot be enlarged, but remain separately and singly, without exaltation, in their saved condition, to all eternity; and from henceforth are not gods, but are angels of God forever and ever” (Doctrine and Covenants 132:16-17).
Are angels exclusively those single inhabitants in one or both of the two lower divisions of the Celestial Kingdom?
Do telestial and terrestrial inhabitants also qualify to become angels?