Monad (philosophy) in the context of "Monist"

Monism attributes oneness or singleness (Greek: μόνος) to a concept, such as to existence. Various kinds of monism can be distinguished:

• Priority monism states that all existing things go back to a source that is distinct from them; e.g., in Neoplatonism everything is derived from The One. In this view only the One is ontologically fundamental or prior to everything else.
• Existence monism posits that, strictly speaking, there exists only a single thing, the universe, which can only be artificially and arbitrarily divided into many things.
• Substance monism asserts that a variety of existing things can be explained in terms of a single reality or substance. Substance monism posits that only one kind of substance exists, although many things may be made up of this substance, e.g., matter or mind.
• Dual-aspect monism is the view that the mental and the physical are two aspects of, or perspectives on, the same substance.
• Neutral monism believes the fundamental nature of reality to be neither mental nor physical; in other words it is "neutral".
• Political monism is sometimes used to describe political concepts, such as unitarianism, based on certain principles like ethnicity or identity.

Hypostasis (plural: hypostases), from the Greek ὑπόστασις (hypóstasis), is the underlying, fundamental state or substance that supports all of reality. It is not the same as the concept of a substance. In Neoplatonism, the hypostasis of the soul, the intellect (nous) and "the one" was addressed by Plotinus. In Christian theology, the Holy Trinity consists of three hypostases: that of the Father, that of the Son, and that of the Holy Spirit.

Henosis (Ancient Greek: ἕνωσις) is the classical Greek word for mystical "oneness", "union" or "unity". In Neoplatonism, henosis is unification with what is fundamental in reality: the One (Τὸ Ἕν), the Source, or Monad. The Neoplatonic concept has precedents in the Greek mystery religions as well as parallels in Eastern philosophy. It is further developed in the Corpus Hermeticum, in Christian theology, Islamic Mysticism, soteriology and mysticism, and is an important factor in the historical development of monotheism during Late Antiquity.

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. 120 CE, gives the following description: