Library Hippolytus Refutation of All Heresies
Book 10
Chapter 20: Melchisedecians
And others also make all their assertions similarly with those which have been already specified, introducing one only alteration, viz., in respect of regarding Melchisedec as a certain power. But they allege that Melchisedec himself is superior to all powers; and according to his image, they are desirous of maintaining that Christ likewise is generated.
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.