How exactly does that not come right back to saying that a Jewish Messiah came to stop Jews from being Jewish?
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I think that you're headed in the right direction with that question.
The Roman Catholic church was founded in rejection of the worship that Yehova presented at Sinai, and sent his son to fulfill.
The Way leaves no room for the catholic pagan priesthood, or praying to dead humans, or statues of Zeus renamed Peter, and those that have come out of that mess just can't seem to adjust to the position that has been prophesied for Israel, as the spiritual leaders of the millennial kingdom.
Many Calvinists also retain Rome's antisemitism.