Let me be very straight-forward (as if that’s unusual).
Messianic Judaism is something that makes me feel… uncomfortable, not for ethnic or cultural reasons, but theological ones. I say “uncomfortable” because, although I’m not sure I could clearly articulate my thoughts very well at this point, I have a sense of theological uneasiness in regards to this movement. I may be able to identify some of my concerns, e.g., Messianic Judaism seems to be a practical outcome of viewing Israel and the Church as two separate peoples of God (clearly an unbiblical concept). But I need to do some more thinking about what’s causing this theological nervousness.