The whole idea of montheism began with the Persians, the tradition of Zoasterianism. It goes back to about the beginning of the Bronze Age. The ability to make metal meant the ability to make weapons, so suddenly war and conquest became possible in a way it hadn't been before. Zoroaster reacted to this by promoting one 'spirit' to being God, the one God. Ahura Mazda, the Spirit of Wisdom.
Zoroasterianism was the first religion to have good vs. evil, a God who expected us to behave in a certain way, heaven and hell, a judgement day, etc. etc.
In fact, prophesy isn't found in the Jewish scriptures until the book of Daniel. This book was written during a period called 'the great exile', when Judea was occupied by Babylon and the Hebrews were forced to scatter to as far away as Persia. It's thought some Jewish priests came in contact with Zoroasterians and that's where Jewish prophesy came from in the first place!
And Zoroasterianism still exists today, in parts of India, the Parsi religion.