The Neoplatonic concept of emanation can be compared to the statements made by fourteenth-century Eastern Orthodox theologian Gregory Palamas. He drew a distinction between God's essence and energies, affirming that God was unknowable in His essence, but knowable in His energies.
Palamas never enumerated God's energies (whereas St Gregory of Sinai does in "On the Different kinds of Energy") but described them as ways that God could act in the universe, and particularly on people, from the light shining from the face of Moses after he descended from Mt. Sinai, to the light surrounding Moses, Elijah and Jesus on Mt. Tabor during the transfiguration of Jesus. For Palamas, God's energies were not separate from God, but were God. However, the idea of energies was kept distinct from the idea of the three Persons of the Trinity, the unity of the Three Persons of the Trinity being united by God's transcendent Essence.
This hierarchy constitutes a threefold structure, each level of which consists of three orders or ranks of celestial intelligences, giving a total of nine such interlocking and mutually participating orders. The function of the lowest of these orders, that of the angels, has two aspects. The first is to transmit the divine grace and illumination, which it has received from God through the meditation of the orders about it, to the order below it, the human order, that taken as a whole thus represents the tenth order, the second is to convert the human intelligence, the "finest of all the offerings; that can be made by this human order, so that it mounts upward and stage by stage returns, again through the meditation of the celestial hierarchy, to a state of union with its divine source and in this way achieves Divinization. This double meditation descending and ascending, constitutes the cyclic movement....
He further states in On Spiritual Knowledge, verse 99, that, "The nine heavenly powers sing hymns of praise that have a threefold structure...."
In Judaism, a similar hierarchy can be found in the entirely non-Kabbalistic system of Maimonides, who posits ten ranks of angels (from the different Biblical terms for them), the lowest of which is Ishim, literally "men".