Gnostic people are the very first christians who existed even before the “christian churches” have been built.
wikipedia says:
Gnosticism (from Ancient Greek: γνωστικός, romanized: gnōstikós, Koine Greek: [ɣnostiˈkos], ‘having knowledge’) is a collection of religious ideas and systems which originated in the first century AD among early Christian and Jewish sects.[1] These various groups emphasised personal spiritual knowledge (gnosis) over the orthodox teachings, traditions, and authority of the church. Viewing material existence as flawed or evil, Gnostic cosmogony generally presents a distinction between a supreme, hidden God and a malevolent lesser divinity (sometimes associated with the Yahweh of the Old Testament)[2] who is responsible for creating the material universe.[3] Gnostics considered the principal element of salvation to be direct knowledge of the supreme divinity in the form of mystical or esoteric insight. Many Gnostic texts deal not in concepts of sin and repentance, but with illusion and enlightenment.[3]
Gnostic writings flourished among certain Christian groups in the Mediterranean world until about the second century, when the Fathers of the early Church denounced them as heresy.[4] Efforts to destroy these texts proved largely successful, resulting in the survival of very little writing by Gnostic theologians.[3] Nonetheless, early Gnostic teachers such as Valentinus saw their beliefs as aligned with Christianity. In the Gnostic Christian tradition, Christ is seen as a divine being which has taken human form in order to lead humanity back to the Light.[5] However, Gnosticism is not a single standardized system, and the emphasis on direct experience allows for a wide variety of teachings, including distinct currents such as Valentianism and Sethianism. In the Persian Empire, Gnostic ideas spread as far as China via the related movement Manichaeism, while Mandaeism is still alive in Iraq.
One of the most important gnostics is Samael Aun WEOR:
portal with entire books in different languages: