Yes, the Jews will be saved through Jesus Christ. However, you need to read the Mt. Olivet discourse thoroughly. Note that the Greek does not refer to the end of the world, but rather to the end of the age (aeion). Here's a good chunk of R.C. Sproul's book on the subject. Here's a good review of his book.
The age of which he spoke is the age in which we now live, not the end of the world or the day of the early church.
RC Sproul is blinded by the same anti-semitism as the Roman Catholic Church is. That is what replaced the early church in the fourth century. Luther had the same bias, so it continued through the early reformation unabated.
Look around at what you see. I always thought that the U.S. would never be a part of any tyrannical antichrist regeime, but Obama hates Christ almost as much as he hates freedom.