[Liberal Classic]

I am no expert, but my opinion is that "I am God" could be a reference from the Koran:

Verily, I am God: there is no God but I: so serve thou me, and establish regular prayer for celebrating my praise. -- Koran 20:14

[Dante3]

Interesting.

Also, in numerous non-Christian cults the leader has referred to himself as God. Rev. Jim Jones used to scream, "I am God." Some of his members are still out there and some are still in hiding, fearing his Death Squad. Incidentally, the present mayor of San Franciso remained a staunch supporter of Jones.

Then there were the various black cult leaders who proclaimed to be God, notably Father Divine. Sweet Daddy Grace also at least implied it.