Can you clarify. If you mean that the Church has replaced Israel utterly and Israel no longer blessed under the Old Covenant, then that is wrong, utterly wrong
To the Jews "belong the sonship, the glory, the covenants, the giving of the law, the worship, and the promises; to them belong the patriarchs, and of their race, according to the flesh, is the Christ", "for the gifts and the call of God are irrevocable."
Israel is to the Christian church as the caterpillar is to the butterfly.