This is a terrain map by Google, centered roughly on the Middle East, a commercial and culture crossroads where ideas and people have intermingled for millennia. Jerusalem is a very old trading city and its name is derived from the Semitic root SLM—known in Hebrew as shalom and Arabic as salaam, meaning peace. Trust is a key element of trade, and it’s possible that religion and culture were ways of creating trust and solidarity among trading groups. At the very least, ideas moved.
Most religions of the time were polytheistic in that people worshiped numerous gods: for the sun, the moon, for dawn and evening, for storms and places.
This image represents the Babylonian Sun God. In the West, as Samuel Noah Kramer described it, History Begins at Sumer. There, in present-day southern Iraq, a (probably Asian) people created one of the earliest urban civilizations (dating perhaps to 5,500 BCE). Early urban civilizations also emerged in the Indus River valley in present-day Pakistan and northwest India (c. 3,300 BCE) and Nile River valley civilization in Egypt c. 3,000 BCE), and the the Norte Chico region of Peru (c. 3,500 BCE. (For what it’s worth, ancient Chinese civilizations along the Yellow and Yangtze Rivers may date to 7,000 BCE).
But back to Sumer and polytheism, or the belief in the existence of many gods. Even polytheistic religions often had “high” gods—a little higher up and more powerful than the other gods. Think: Zeus, Marduk, Atun, Shang-ti.