Library Hippolytus Refutation of All Heresies
Book 5
Chapter 17: The Sethian Doctrines to Be Learned from the Paraphrase of Seth
The opinion of the Sethians appears to us to have been sufficiently elucidated. If, however, any one is desirous of learning the entire doctrine according to them, let him read a book inscribed Paraphrase of Seth; for all their secret tenets he will find deposited there. But since we have explained the opinions entertained by the Sethians, let us see also what are the doctrines advanced by Justinus.
English translation by J.H. MacMahon, in Ante-Nicene Fathers, Vol. V (eds. Alexander Roberts and James Donaldson; Buffalo: Christian Literature Publishing Co., 1886). Public domain. Digital text via New Advent Church Fathers.