The Gnostic/Biblical Seth considerably post-dates the AE Seth, yet there are aspects of the later cults that do show association and derivation...
Their God, the great archon, spoke: “They have come from a land of great men. They come from a land of men not defiled, for their souls were not created by one defiled. They come as the direct commandment of a great angel, resplendent in knowledge and foreknowledge. I shall send a blinding mist and the eyes of the Illuminator shall be darkened.”
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Once again, for a third time, the Illuminator of knowledge shall pass by the world of man in great glory. He shall leave fruit-bearing trees for the descendents of Noah’s sons Ham and Japheth. He shall redeem their souls in the days of their deaths. The whole of creation that came from the dead earth shall fall then under the authority of death. For they have not received the spark of the Holy Spirit from the creator of their kingdom, but shall receive this knowledge from the eternal and powerful angel, the Illuminator, carried from the aeons in the seed of you my son, Seth.
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My son, subsequent generations shall speak of the great Illuminator’s appearance but will use his name in error. The leaders of the 13 kingdoms shall propose theories as to his origin. But the generation without a king shall know from whence he had come and how he was chosen. “Out a foreign land and from a great aeon, has the great Illuminator come forth. And his light shed over the race of secret seed hidden within.”
Morph.