10 Ialdabaoth, again, being incensed with men, because they did not worship or honour him as father and God, sent forth a deluge upon them, that he might at once destroy them all. But Sophia opposed him in this point also, and Noah and his family were saved in the ark by means of the besprinkling of that light which proceeded from her, and through it the world was again filled with mankind. Ialdabaoth himself chose a certain man named Abraham from among these, and made a covenant with him, to the effect that, if his seed continued to serve him, he would give to them the earth for an inheritance. Afterwards, by means of Moses, he brought forth Abraham's descendants from Egypt, and gave them the law, and made them the Jews. Among that people he chose seven days, which they also call the holy Hebdomad. Each of these receives his own herald for the purpose of glorifying and proclaiming God; so that, when the rest hear these praises, they too may serve those who are announced as gods by the prophets.
Source: Adversus haereses (New Advent)