In some Gnostic systems, the supreme being is known as the Monad, the One, the Absolute, Aiōn Teleos (the Perfect Aeon, αἰών τέλεος), Bythos (Depth or Profundity, Βυθός), Proarchē (Before the Beginning, προαρχή), Hē Archē (The Beginning, ἡ ἀρχή), the Ineffable Parent, and/or the primal Father. The Monad is an adaptation of concepts of the monad in Greek philosophy to Christian belief systems.
The Apocryphon of John, written c. 180, gives the following description:
The Monad is a monarchy with nothing above it. It is he who exists as God and Father of everything, the invisible One who is above everything, who exists as incorruption, which is in the pure light into which no eye can look. "He is the invisible Spirit, of whom it is not right to think of him as a god, or something similar. For he is more than a god, since there is nothing above him, for no one lords it over him. For he does not exist in something inferior to him, since everything exists in him. For it is he who establishes himself. He is eternal, since he does not need anything. For he is total perfection.[1]