4 They declare, moreover, that her son had also himself a certain breath of incorruption left him by his mother, and that through means of it he works; and becoming powerful, he himself, as they affirm, also sent forth from the waters a son without a mother; for they do not allow him either to have known a mother. His son, again, after the example of his father, sent forth another son. This third one, too, generated a fourth; the fourth also generated a son: they maintain that again a son was generated by the fifth; and the sixth, too, generated a seventh. Thus was the Hebdomad, according to them, completed, the mother possessing the eighth place; and as in the case of their generations, so also in regard to dignities and powers, they precede each other in turn.
Source: Adversus haereses (New Advent)