Amateur Rambler / Proud Ergi
Jehovah is not Vishnu is not Allah is not Spinoza's God. Many religions contradict each other on the most fundamental level, so from those that claim to be the only true religion, at most one of them can be true, not many.
The mythological Gods are not the same, but they still could come from the same Source.
Besides, Ahura Mazda is Lord Varuna.