Why is the hebrew insistence on monotheism an important turning point in the history of mediterranean religions?

Judaism was formerly a religion in which policies are about monotheism mostly and about Jews in context to law and morality. As centuries past by, Judaism has faced and influenced a lot of people throughout generations in the Hebrew people and this religion now became a lifestyle, most people in the old times had set specific occasion such as the Sabbath, the burning of incense and worship to YHWH. As this became the norm, the people also become in unison to the laws and doctrines of this religion that it has been a culture, the norm –not to kill, steal, worship other Gods, commit adultery, cannibalism and etc. Hope this helps.   

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