Controversial topic!!! - What is god?

[AdolescentMasturbator]

Gooch, good for pointing that out about Persian Empire. The persian empire though it had an official state religion of Zoroastrianism , had many other religions which influenced relgions for millenia to come.

Actually one of the earliest concepts of a Satan-like figure was in Zoroastrianism. Basically Satan(Ahriman) was God's shadow(Ahura Mazda). I don't think you would have a Satan in Christianity if not Zoroastrianism.

Also the concept of a huge flood washing away the earth is noted in all different mythologies.

Many religions have similar stories because they all originate sometimes from the same thing.