Those would be meaningful, Robert, if Jewish referred to descendants of Abraham. It doesn't. Jewish refers to the descendants of the nation of Judah, Israel's son.
True Christians are certainly sons of God but they are not necessarily Jews.
Rom 2:28 For you are not a true Jew just because you were born of Jewish parents or because you have gone through the ceremony of circumcision.
Rom 2:29 No, a true Jew is one whose heart is right with God. And true circumcision is not merely obeying the letter of the law; rather, it is a change of heart produced by the Spirit. And a person with a changed heart seeks praise from God, not from people.
Gal 3:9 So then those who are of faith are blessed with Abraham, the believer.
Joh 1:47 Jesus saw Nathanael coming to Him, and *said of him, "Behold, an Israelite indeed, in whom there is no deceit!"
Literally, truly an Israelite. An Israelite not merely in descent, but in character, according to the ideal laid down in God's law. The word Israelite itself was an honorable designation. See on men of Israel, Acts 3:12, and compare remarks on Jews, John 1:19.
No earthly definition of religion can separate man from God and the position they hold. I'm sure in heaven they will not ask are you a Jew, Israelite, Christian, if you make it, you will be Gods child. Christian or Jew we are blessed because we serve the Most High God. For it is not by rights but by faith in God that we are His children. Religion separates, God unites.