... Have a Jew carry a weapon forged with the nails of Jesus's crucifix, which is somewhat dubious ...
huh?
Shiro was
Buddhist, not even one of the People of the Book. Sanya calls himself an atheist, but admits to -- maybe -- being agnostic (when pressed).
I mean, Jesus was a Jew! Matthew 1:1 also cites him as from the line of Kings, the Davidic house (regarding the importance of which, note how Jim is going to great lengths to demonstrate how important a Kingly lineage is).
A whole bunch of "Christian" words -- like "Messiah" and "Hallelujah" -- are
Hebrew. All those -el names, Raphael, Uriel, Michael... they come from Hebrew, where "-el" means "of God."
During Jesus' lifetime (and his direct disciples) "Christianity" was a sect of Judaism; specifically, the sect that believed the prophesied Messiah had in fact arrived.
There's STILL groups like "Messianic Jews" (some of whom are mere revanchist Christians (trying to proselytize the unconverted Jews), but some are genuine practicing Jews who believe the Messiah has come and given them a New Testament).
Are you going back to that whole "Jews killed Jesus, and therefore are Eeeevil!" rationalization?