Actually it all stems back to the time of Christ. There was no race of Jews at that time as we genetically see them today. They were caucasian. After the Ressurection, the believers went out and spread the word to the rest of the caucasian population who had spread throughout the world and were practicing pagan religions. These are the "lost tribes" The few who refused Christ were then overran by Muslims and had their genetics spoiled, and eventually driven out entirely. Ever since, they have been planning their revenge on us for leaving them behind, and hate that their blood will be forever tainted with that of Cains. These are the people that Revelation 3:9 warns us about. If we account for the fact that the term Jew did not exist during the writing of the bible, and was later introduced to it liberally, we can understand it better. It should read "I know those who call themselves the Sons of Israel but are not, but are the Synagogue of Satan. This is who we know today as Jews.