> Ancient Israelites just adopted a lot of customs from Egyptian Priestly caste...Not surprising, considering Moses was raised as Egyptian.
Even allowing the existence of Moses (which, if we're feeling skeptical we can reinterpret as the long cultural shadow of Egypt), this still seems like a "just so" story.
Do you know if there's any evidence that Egyptian priests actually had medical justifications for their taboos? Similarly, how do we know that ancient Israelites adopted certain beliefs due to direct Egyptian influence, rather than participating in widespread regional practices also found in the Canaanite populations from which they emerged?