The gospel has never been good news for Jews. It resulted in 2000 years of persecution, murder, and forced conversions.
I wonder if you agree that evil is a common human tendency? (if you count every kind, including the modern stuff like taking advantage of other people, at their expense, or returning insult for insult, or other common modern ills)
But, regardless, one thing to observe,
even if you think only some are evil....
If all evil actions can be laid at the feet of
entire groups when some evil is done
in the name of the group, then America itself (as for most nations) would then be notably, remarkably evil, by that standard. Right? Because some have in fact claimed to do the great evils they did
for America.
Or, as I see it, tried to make themselves seem justified or more legitimate by wrapping themselves in the flag....
A pretense, or even a delusion, but so common.
If in contrast instead we ask 'what is the general tendency averaged over time for America', then the answer is much more mixed, and America is no longer some simply evil nation.
But flawed, or mixed. Doing both goods and evils. Yes?
So, I think the way to judge a philosophy or religion isn't by what some do in it's name, akin to wrapping themselves in the banner/flag of it, but instead, by the principles of the philosophy and by the general tendency averaged over time of those that are actually trying to do as the principles of the religion/philosophy state.
So, not the tyrants that act in its name, but instead the more typical actions of those that actually believe in the principles and do them, over time -- the true believers -- (not just over 1 time period, but over all the time periods together).
Here's a good analogy in Judaism:
While most of the kings of Israel and Judah did evil we read, should we conclude that Israel is then evil?
Answer: No. We
cannot judge Israel by what most of it's kings did.
Instead, we should look to see what
those that truly believed (in the prophets) did.
While it will not rise to modern standards of the more evolved civilization we have now, how did the actions of the true believers
compare to their own contemporaneous times?
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Finally, about the 'Christians' (or who used the banner) who murdered Jews, they will meet this fate:
Justice:
Romans 2:6 God "will repay each one according to his deeds."
They will pay for their evils they did not utterly and totally repent (denounce and cease) of doing. So we read in the new testament.