It was God himself who elected not to allow antichrist Jews into the Kingdom of God. They, like the Gentiles must come by the way of the new birth. You must be born again and born of God. And God in is infinite wisdom and in his foreknowledge determined to then replace those Jews who would not believe and be saved by bringing forth the mystery that was hid from ages, that he would take out of the Gentiles a people for his name sake. In the case of the New Testament Church, these Gentiles replaced Jews who denied the name of Jesus Messiah and would not come under his throne and or his family name.
Replacement theology is a fact of Scripture.
All Jews are admonished that if you are going to be saved, in the remnant, then you must be born again of water and Spirit. The remnant of Israel will be the only Jews saved. All Jews must get into that number. No, there remains after 2,000 years a large contingent of antichrist Jews who would love nothing better than to blot the name of Jesus out from the earth. They believe it, teach it, and it is contained in their writings.