Gregory of Nyssa

The resurrection promises us nothing else than the restoration of the fallen to their ancient state; for the grace we look for is a certain return to the first life, bringing back again to paradise those who were cast out from it. If then the life of those restored is closely related to that of the angels, it is clear that the life before the transgression was a kind of angelic life, and hence also our return to the ancient condition of life is compared to the angels.