The Abrahamic Religions are a product of Sumerian Culture
A little bit ago I began studying the Code of Hammurabi, a Sumerian code of law. Quickly, I realized that the Sinai Code, dating some number of hundreds of years later, mirrors the code of Hammurabi almost perfectly. This got me thinking, Abraham, the patriarch of these religions left Ur per Genesis, the capital of Sumeria, to begin a new nation that would eventually become Jacob/Israel. So then, through tradition, this sumerian culture has been handed down. So by transition, at it's core, Judaism, Christianity, and Islam are sumerian religions.