@Xenophon >Israel will be saved by the Lord with an everlasting salvation; you will not be put to shame or humiliated for all eternity.

Hence why most Christians view "Israel" as The Christian Church at large since Christ fulfilled the law and old covenant. This also ties to Revelation 7:9-10
>9After these things I looked, and behold, a great multitude which no one could number, of all nations, tribes, peoples, and tongues, standing before the throne and before the Lamb, clothed with white robes, with palm branches in their hands, 10and crying out with a loud voice, saying, “Salvation belongs to our God who sits on the throne, and to the Lamb!”
We inherited the promises made to Israel. Peoples of every nation, tongue, tribe, of a multitude no one can count, praising God. How else does that happen besides The Christian Church becoming Israel?