During the Middle Ages pogroms in various European countries disenfranchised Jewish populations, murdering and exiling thousands of people making them, in effect, homeless. Around the same time the papacy launched the Crusades against Muslim control of Jerusalem, a ‘holy war’ that permitted heinous atrocities against ‘enemies of Christ’. In the 15th Century Catholic authorities in Spain demanded Jews and Moslems to convert, refusal led to torture and burnings at the stake.
This infighting between religions, all adhering to a singular God, was a result, I guess, of mis-interpreted Biblical scriptures, studied in attempts to trace their religious origins back to Abraham through his sons and grandsons in order to determine who inherited God’s blessing as the chosen ones as dictated in the covenant passed down by God to Abraham.
