Gnostic

7 clues
Knowing
Early Christian
Having knowledge
Believer in a demiurge
Christian's predecessor
Believer that matter is evil
One who seeks salvation through knowledge
Similar answers:
Acertainjustice
Acoustic
Acoustical
Acousticcoupler
Acousticguitar
Acoustician
Acoustics
Acrostic
Acrostical
Acrostics
Acuestickguitar
Agno
Agnomen
Agnomina
Agnon
Agnostic
Agnostics
Altruistic
Amnestic
Anapaestic