>>40893155
in one of the History of Middle Earth books (i think it was either Morgoth's Ring or Peoples of Middle Earth), Tolkien talks about the Haradrim, and how they viewed Sauron.
The Haradrim didn't call him "Sauron", that was a mocking nickname that the Elves gave to Sauron which basically meant "stinky wind" or something like that (basically calling him a fart). Sauron referred to himself as Mairon, or rather Tar-Mairon ("Tar" being a royal title). The Haradrim referred to him as "Zigur".
"Zigur" meant "Wizard" in the Haradrim language, and why this is interesting is because here we see Tolkien linking Sauron and the Orc religion with the old Sumerian/Babylonian/Chaldean religion that used Ziggurat temples (oh yea did i forget to mention, the orcs all worshiped Melkor as god, and Sauron as the High Priest) .
Ziggur-at. Wizard Towers.

Where this starts to get tricky is when you study the history of Jewish (and therefore Christian as well as Islamic) religions, since there is definitely some linkage between the ancient Mesopotamian religions and the Abrahamic religions. One would think that Tolkien, being as erudite and as interested in ancient cultures and religions as he was, would have known about the connection between Jewish religion and the older Mesopotamian religions, but whether he was trying to discreetly criticize Judaism, or simply hadn't made the connection, is unsure.
He did specifically mention that only the Melkorin religion practiced ANY form of blood sacrifice. Eru nor Manwe never demanded any worship, nor sacrifices, nor did they have any temples, it's just never spoken of anywhere in any of the books.