Also, Moon is relevant in Islam, as a calendar and timekeeping, nothing to be worshipped.
Also, All Monotheistic Religions have had fasting (the 3 big ones that survived so far) but again, the worst enemy of the people is their own selves and not the devil, and thus they modified what was given to them.
After 30 years of trying, I'm pretty sure I can't believe any religion was ever true. It's literally all made up, and the only bits that survive are the unfalsifiable parts or rely on nostalgia or ignorance.