Virtually all of the biblical words which define church doctrine, have not actually been translated, but merely transliterated. "Christ Jesus", is a transliteration which, if actually translated in context, would be "King Saviour". This is without doubt a title for the one who saves the fallen Davidic kingdom of covenant Israel, by raising it from the dead. Since the Davidic kingdom does not currently exist on all the land between the Euphrates and the river of Egypt, it requires a saviour to resurrect the kingdom and ascend the throne of David, so that it can fulfill the Abrahamic covenant(the gospel) by blessing all the nations with "peace on earth, good will to men".
Judaism began in 6th century BC Babylon, to watch and wait for the coming "saviour king", and to assemble a body of Abrahamic covenant believers, to follow him to kingdom resurrection.
All those who believed the Abrahamic covenant(the gospel), became Jews(true Jews).
When the captivity ended and the Jews returned to Judea, they backslid from their zeal purpose of resurrecting the kingdom, and so became, in Jesus' eyes, the backslidden lost sheep of the house of Israel.
Jesus came to seek and to save that which was lost(the lost sheep of the house of Israel), by healing their backsliding, and bringing them back into the fold of "zeal for kingdom resurrection and on to fulfillment of the Abrahamic covenant/gospel".
The sect called "The Zealots" did not backslide because they remained zealous for the kingdom, and this is obvious from the fact that Jesus did not criticize, nor preach to the Zealots. Indeed, it is common knowledge that there were known Zealots in his disciples.
While Jesus himself came only to the backslidden of his own people, the Jews, the gospel was never reserved for any one ethnic, religiou, or family group of people. The gospel was always the power to salvation, and anyone who believed it, right from Abraham's day, was considered righteous.
Jesus taught his disciples so that they could go out of Judea and recruit anyone, of any background, to join the kingdom resurrection movement.
It is therefore true to the story, that everyone who believes the gospel, is part of the power/body which leads to salvation(of the world through world peace).
Salvation for the Jew(anyone who believes the gospel), will happen when the resurrection of the Davidic kingdom takes place, because that is the purpose for which Judaism began, and the purpose from which the Jews ahd backslidden.
According to the Abrahamic covenant(the gospel), that great nation/kingdom will bless all the nations, so salvation for all the nations(The Greek), will come when the resurrected nation/kingdom of "True Jews", causes the other nations to beat their swords into plow shares, learn war no more, and not rise up against one another any more. That blessing, of peace on earth, good will to men, will be the salvation of all the families of all the nations.
Because the great nation of True Jews does not have everlasting possession of all the land between the Euphrates and the river of Egypt, it means that the saviour king(the Jesus Christ) has not yet come, and is the reason that we still pray for "Thy kingdom to come on earth, as it is in heaven".
Anyone who's sole purpose in life is the resurrection of the Davidic kingdom, for the purpose of blessing all the nations with everlasting world peace, is a "True Jew/True Christian". Do you know anyone like that?
"I don't speak for God. All I have is personal opinion based on the story of continuity which runs through the bible!"