No. When a Jew or a Gentile is born again and placed into the body of Christ, then there is no difference between that Jew and that Gentile. They are new creations in Christ. It does not matter if Abraham was their father according to the flesh. What matters is they are Abraham‘s children according to faith. They are not new creations in Israel. Israel’s promises are earthly. The church, the body of Christ, has its promises heavenly. Christians have no part in Israel, which is pretty much a pagan nation itself today. At the least, it is pagan regarding the Lord Jesus. They are Abraham‘s children, according to the flesh, but not according to the spirit, and that will change during the millennium, and that is when all Israel will be saved. All the church is saved right now.Typical response, ignoring the reason the church is part of All Israel. Just a repeat of false claims. Here it is again, when a person under the New Covenant is born anew, they become "siblings of Christ." Romans 8:29. Not to put too fine a point on it, but if my brother is an Israelite, I am an Israelite. You cannot get around it, so you ignore it and change the subject.
Not to mention there is no difference between Jew and Gentile, Israel and the Church, male or female, slave or free in Christ. None, zip, nada...