You can't really get before Abrahamic religions- at least not Judaism. The Jews were already a power by 3000BC. At least, they were a nation of tribes with (probably) similar beliefs. They didn't yet have the set of laws laid down by Moses, but they already believed in the one God, even if they worshipped others. They sort of worshipped other pantheons while thinking Jehovah was the supreme asskicker among them. If you mean before they became all organized as a nation, I don't think that happened until 2000 BC or so. 2500 BC was when they started killing everyone like they were just targets at a shooting range- Sumeria had established a pretty decent empire, the Egyptians were starting to build pyramids and had kicked the asses of half of Africa already, and the Celts started invading Europe. Huangdi, China's legendary "Yellow Emperor" ruled somewhere around 2500 BC, and was the founder of Chinese civilization. Or so the legend goes.

Considering the somewhat vague state of the word "Demon" as an appellation in the DV, who knows what exactly Demonreach is involved with?

Is there one standardized rules thread or are they just scattered all over the place in the different stickies?