Every tradition guards its door with vocabulary, and Gnosticism’s door is better guarded than most. Open any Nag Hammadi text cold and the aeons, archons, and pleromas arrive without introductions, which sends many willing readers straight back out.
This glossary is the missing doorman. Twenty terms, defined in plain language, ordered so that reading straight through gives you the whole cosmology in miniature, from the unknowable source down through the fall, the world, the human layers, and the way back. Bookmark it, and the old texts open considerably easier, since between them these twenty words carry most of the weight in any Gnostic sentence you will ever meet.
Monad. The absolute One, the unknowable source above every god and name. The texts mostly describe it by subtraction, unbegotten, illimitable, beyond thought, since anything sayable about it is already too small. Everything below on this list is, one way or another, its light at various removes.
Pleroma. Literally “fullness.” The realm of divine completeness from which everything radiates, mapped in full in its own post. Origin and destination both, and the opposite of the felt scarcity that runs ordinary life.
Aeon. One of the divine qualities or powers that emanate from the source and populate the Pleroma, with names like Mind, Truth, Life, and Church. Also a word for vast ages of time, and the double meaning is deliberate.
Syzygy. A paired unity. Aeons exist in male-and-female couples, because in this cosmology nothing whole exists alone, a rule whose one violation produced the world you are sitting in.
Barbelo. The first thought of the source, its earliest self-reflection, honored in several texts as the divine Mother and the first emanation, the womb through which the fullness unfolds.
Sophia. Greek for wisdom, the youngest aeon, whose fall and rise is the myth’s central drama. She created alone, her mistake became the world’s maker, and her recovery is the story’s promise.
Demiurge. From the Greek for craftsman. The lesser maker who built the physical cosmos from Sophia’s crisis, ignorant of everything above him. Powerful, second-rate, and convinced he is the only god in existence.
Yaldabaoth. The demiurge’s proper name in many texts, a lion-faced power also called Saklas, the fool, and Samael, the blind god. The three names are a character sketch.
Archon. Greek for ruler. The powers who administer the demiurge’s cosmos like hostile middle management, keeping souls asleep and busy. The texts count them in sevens and twelves, matching the planets and the zodiac, the visible machinery of fate.
Kenoma. The deficiency, emptiness as a realm. Everything outside the fullness, including this world, considered as a place built from lack. The Gnostic answer to why nothing here ever feels like enough.
Hylic. From hyle, matter. The lowest of the three layers of a human being, and a name for people living entirely at that layer, all appetite and inertia, the spark buried past hearing.
Psychic. The middle layer, soul, the busy apparatus of thought, feeling, and choice. Capable of turning either way, toward matter or toward spirit, which makes it the battlefield layer.
Pneumatic. From pneuma, spirit. The highest layer, the part that was never made here, and a name for those living from it. The three-layer scheme was less a caste system than a diagnosis of where a life is currently running.
The Spark. The fragment of divine light hidden in the human being, Sophia’s inheritance scattered into the world. Everything in the tradition exists to wake it, and no power of this world can manufacture or extinguish it.
Gnosis. Greek for knowledge, and the tradition’s namesake, meaning direct, transformative acquaintance rather than information, a distinction with its own post. You do not learn gnosis. You undergo it.
Mysterion. A rite or recognition that changes the person who receives it, delivered in graded sequence to the prepared. The ancient world’s mysteries are the model, and the plural covers everything from baptisms to the unspeakable summit.
Bridal Chamber. The highest Valentinian mystery, the sacrament of reunion in which the divided soul rejoins its heavenly counterpart, healing the oldest split. The tradition’s image for final wholeness.
Anapausis. Repose, the rest that is a settling into origin, the opposite of a pause between efforts. The goal-state named in Thomas and elsewhere, and the second half of the credential “motion and rest.”
Pronoia. Forethought or Providence, the divine awareness that descends into the dark calling sleepers awake, voice of the beautiful hymn that closes the long Secret Book of John. When something in your life arrives precisely as a reminder, this tradition had a name for the sender.
Nag Hammadi. The town in Upper Egypt near which a sealed jar of thirteen codices surfaced in 1945, returning most of the texts this vocabulary comes from after fifteen centuries underground. Before the jar, scholars knew these words mostly from the insults of their enemies. The jar is the reason any of them are definable at all.
Using the Words
A vocabulary is a set of distinctions, and this one distinguishes things modern language blurs. English has one word for knowledge, and this list has three kinds. One word for rest, and the list knows the difference between stopping and arriving. No common word at all for the felt deficiency of a world running on lack, and the list has kenoma waiting.
Borrow the distinctions even if you leave the cosmology. The next time an hour feels empty in a way no schedule explains, or a piece of knowing changes you in a way no fact ever has, you now hold the older, sharper words for what happened. Try one deliberately this week. Watch a restless evening and ask whether the restlessness is hylic, psychic, or the spark turning over in its sleep, and note how the mere act of sorting changes your relation to it. The texts will be here when you want the full grammar, and the words work loose from the shelf just fine.
Definitions follow the usage in Marvin Meyer’s The Nag Hammadi Scriptures (HarperOne, 2010) and the site’s own deeper posts on each concept.
