Abraham himself was both. But he's kind of a unique figure. That's why he's called Abraham, 'father of a multitude.'
There is the new man. There are also still Jews and Gentiles. There is a lot of prophecy about the Jews, i.e. tribe of Judah, in both the OT and the NT. I don't see anything wrong with discussing it, as Paul does extensively in Romans and elsewhere. Certainly no one here is saying they will be saved apart from Jesus.
For Jesus is the one referred to in the Scriptures, where it says, 'The stone that you builders rejected has now become the cornerstone.
And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved."
But neither do I think that God will go back on his promises to the house of Judah, just as I do not think he went back on his promises to the house of Israel, [for those who are thinking the house of Israel just disappeared forever off the face of the earth.] This is not about who we are. It is about who God is.
He will not say he is going to do something and then not do it.
For the gifts and the calling of God are irrevocable. Rom 11:29
Many of the Jews living in 70 A.D. probably thought along similar lines. "God cannot ignore his promises to the house of Judah." "God promised in Jeremiah that 'In those days shall Judah be saved, and Jerusalem shall dwell safely.'"
When the Roman armies were camped on the hills around the city, it must have looked like this might be Zechariah's prophecy coming true:
Behold, the day of the Lord cometh, and thy spoil shall be divided in the midst of thee.
For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.
Then shall the Lord go forth, and fight against those nations, as when he fought in the day of battle.
What Jew in Jerusalem could have read this prophecy, and not expected that the Lord would soon go forth and fight against their enemies, and give them a great victory? And cleave the mount of Olives? Even Zechariah said "Jerusalem shall be safely inhabited." But, that is not what happened. They misread the prophecies, and they ignored the warnings of the apostles, who said Jerusalem was now heavenly.
Isaiah had said that Jerusalem and mount Zion would be established in the top of the mountains
, and shall be exalted above the hills
, and that was fulfilled when Jesus ascended to his Father's throne, where he was "made Christ," receiving an eternal throne in Jerusalem, over all of the house of Israel, as David had also reigned over all Israel at Jerusalem.
The word that Isaiah the son of Amoz saw concerning Judah and Jerusalem.
And it shall come to pass in the last days, that the mountain of the Lord's house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it.
And many people shall go and say, Come ye, and let us go up to the mountain of the Lord, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the Lord from Jerusalem.
After Jesus ascended to his Father's throne, Jerusalem was in heaven, and was called "Jerusalem which is above," and "the mother of us all." [Gal. 4:26] The earthly city, "Jerusalem which now is," was cast aside, and identified with Hagar. All believers have come "unto mount Sion, and unto the city of the living God, the heavenly Jerusalem." [Heb. 12:22]
Paul viewed the history of Old Testament Israel as a type and a figure, intended for "our examples." He wrote, "Now these things were our examples, to the intent we should not lust after evil things, as they also lusted.... Now all these things happened unto them for examples: and they are written for our admonition, upon whom the ends of the world are come." [1 Corinthians 10:6, 11]
Peter said the prophets "prophesied of the grace that should come unto you." [1 Peter 1:10] They wrote of the gospel, and the future blessings and grace to come upon those who believe in Christ. Often, the nations of Israel, Judah, and the city of Jerusalem, and other nations, were figures and metaphors, and these need to be interpreted, as the apostles often did, in the NT. For example, see Acts 15:16.
Peter said, "Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into." [1 Peter 1:12]
Circumcision of the flesh now counted for nothing.
1 Corinthians 7:19Circumcision is nothing, and uncircumcision is nothing, but the keeping of the commandments of God.
The true circumcision was that "without hands," and of the heart. Paul said,
For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
The promises to Israel now applied to the Israel that was by faith in Christ, not ethnic Jews. This Israel included Gentile believers, who were grafted in, and Jews who did not believe in Christ were branches broken off from their tree. Any who rejected Christ was cut off, and was no longer in Israel, as the law had said.
But those things, which God before had shewed by the mouth of all his prophets, that Christ should suffer, he hath so fulfilled.
Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord.
And he shall send Jesus Christ, which before was preached unto you:
Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
For Moses truly said unto the fathers, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear in all things whatsoever he shall say unto you.
And it shall come to pass, that every soul, which will not hear that prophet, shall be destroyed from among the people
The gospel makes all the racial theories void