People were killed if being Gnostic, so that's why it's not around now, but it's the real teachings, and our Savior taught it, the truth will set you free is basically saying you'll leave the material realm once you gnostic, or knowledge. Think about it. We've been forced to belive what they wanted us to or death.
Syrian-Egyptian Gnosticism Edit
Syrian-Egyptian Gnosticism includes Sethianism, Valentinianism, Basilideans, Thomasine traditions, and Serpent Gnostics, as well as a number of other minor groups and writers. Hermeticism is also a western Gnostic tradition, though it differs in some respects from these other groups. The Syrian–Egyptian school derives much of its outlook from Platonist influences. It depicts creation in a series of emanations from a primal monadic source, finally resulting in the creation of the material universe. These schools tend to view evil in terms of matter that is markedly inferior to goodness and lacking spiritual insight and goodness rather than as an equal force.
Many of these movements used texts related to Christianity, with some identifying themselves as specifically Christian, though quite different from the Orthodox or Roman Catholic forms. Jesus and several of his apostles, such as Thomas the Apostle, claimed as the founder of the Thomasine form of Gnosticism, figure in many Gnostic texts. Mary Magdalene is respected as a Gnostic leader, and is considered superior to the twelve apostles by some gnostic texts, such as the Gospel of Mary. John the Evangelist is claimed as a Gnostic by some Gnostic interpreters, as is even St. Paul. Most of the literature from this category is known to us through the Nag Hammadi Library.