If a Jew does not abide in unbelief but will accept Jesus, he of course then be part of the Church. A few Jews indeed accepted Christ. But this is just a small part. Paul says only a rest of Jews will become Christians, but most will not accept Christ and therefore go to hell (Romans 9:27).
I meant Matthew 21:43.
The apostate Jews are Babylon the Great according to the Bible. They are the wife of the devil. See:
The Antichrist will be a Muslim!!! - Christian Chat Rooms & Forums
Jesus was talking to the Jews who wanted to kill him: John 8:40
The whole nation of Israel did kill him: Matthew 27:25