You wrote: “If so, then you have just committed yourself to the claim that Jews do not worship the God that Catholics worship.”
Jews and Christians and Muslims and Samaritans all claim to worship the God of Abraham. I see no reason to doubt the claim, but I do see reason to say that only Christians have it truly right. That is not to say Jews don’t worship the same God. It is to say they know Him only deficiently compared to Christians. I recently read a book by Yoel Nathan who made a claim (somewhat tendentious) that ancient Jews knew of more than one person in the Godhead, but that knowledge was lost in the intertestimal centuries. Maybe.
“And that commits you either to the claim that the Jews throughout the diaspora switched from worshipping YHWH to worshipping some other being around the time Jesus made the New Covenant, or to the Marcionite heresy. Which is it?”
Neither. 1) I believe the Jews worshipped Yahweh. I just don’t believe knowing only Yahweh gives a man anything but an incomplete understanding of the Trinity. 2) Jesus was always orthodox. I do not assume Jews other than Him automatically were. What the body of Judaism may have believed may not only have been untrue by Jesus’ time, but may in fact have been contrary to previous belief (as per Nathan’s thesis). 3) Your premise is faulty.
You can't have it both ways. Logically, either your statement in #64 is false, or what I said in #83 is true.
-A8