The Thunder, Perfect Mind is the title of one of the poetic books in the Nag Hammadi Library

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And from the foreknowledge of the perfect mind, through the revelation of the will of the invisible Spirit and the will of the Autogenes, {the} perfect Man (appeared), the first revelation, and the truth. It is he whom the virginal Spirit called Pigera-Adamas, and he placed him over the first aeon with the mighty one, the Autogenes, the Christ, by the first light Armozel; and with him are his powers. And the invisible one gave him a spiritual, invincible power. And he spoke and glorified and praised the invisible Spirit, saying, 'It is for thy sake that everything has come into being and everything will return to thee. I shall praise and glorify thee and the Autogenes and the aeons, the three: the Father, the Mother, and the Son, the perfect power.'

- from The Apocryphon of John from The Nag Hammadi Library

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text of The Thunder, Perfect Mind