God with Moral Fault

In the timeless time of eternity, does God have a pre-history? What was God "before" (so to speak) God became GOD? Was there some terrible mistake involving culpability? If so, how did this God of pre-history handle His mistake?

Availing himself of certain currents found in Scripture and in classical Rabbinic sources, the author makes the case that God is a being with moral fault. The author argues that how God handled His mistake was the process which allowed God to become the celebrated: THE GREAT THE MIGHTY THE TERRIBLE GOD who remains steadfast to his covenant and loving bond. [Nehemiah 9:32] And it all started with Noah:

But Noah found grace/favor in the eyes of Hashem.
[Genesis 6:8]