He said to him: ‘My son, this surely is the mystery: that he Adam sinned in ‘higher Thought’, for a י Yod was removed from א Aleph, leaving the form of ‘V-Y’ ו־י (woe), because the Cause of causes withdrew from there, Who is the Hidden Thought in the letter Yod י of א Aleph, for there is no unity [Var. thought] without it.
And here is a mystery which has never been revealed until now.
And this is: (Ps. 91:14–15)... because he has known My Name. He shall call Me, and I will answer him...
This is the ‘Name of Yod י’, above Which nothing at all is higher except: He that created everything, and Whom no-one created. For there is a creating agent that is created, such as water, which creates vegetations, and grows them – yet itself is created. But This-One created, and was not created, He above Whom there is no higher god.’