Gnosticism is just a fancy name for satanist/luciferean/humanist/liberal/occultist/newager/channelers/reincarnationis​t. And as such YAH rebuke all those spirits and their demonic doctrines.
YAHshua/Jesus was never a gnostic, and a careful reading of the gospels will show that quite clearly.
Gnosticism is a daughter of babylon, and the mother of freemasonry , it is vanity/selfishness and greed masquerading as concern and commonweal, and claiming to be god/s does not make it so, possession was and always has been the result of rejecting YAHshua/Jesus, His word/the Holy Spirit, and seeking after alternatives to fill the void, guarantees separation from YHVH/God, not inclusion/oneness. There is no other route to Father and the Wisdom from above, for male and female made He them in His image. YAH rebuke the gnostic so called christian(false believers) writing, they are devilish and deceptive, but certainly do appeal to itching ears and wicked hearts, Amen.