The offer of the kingdom to the nation of Israel was a national offer so
the nation had to respond.
Jesus preached to individuals.
Evidently he considered the "nation" to
have responded since he said the kingdom would be taken from them and given to another people (
Matthew 21:43).
The offer of salvation by grace was an individual offer such that
those who were waiting for the nation to accept the kingdom would gain immediate salvation and not have to wait for the resurrection.
Do you have any NT teaching to that effect?
"Individual" was the only offer Jesus ever made.
The offer of the kingdom to the nation of Israel was withdrawn at 70 AD.
Authoritative NT
teaching (as distinct from personal interpretation of prophetic
riddles--
Numbers 12:8) is that unbelieving Israel was "cut off" the one olive tree of God's people (her unbelief being judged in the destruction of Jerusalem in 70 AD) and believing Gentiles were grafted in. And Israel will
remain cut off as God's people as long as she persists in unbelief (
Romans 11:17,
Romans 11:23), which has gone on for 2,000 years now.
The offer will be made again when a nation will be born in a day.
Unbelieving Israel is now on the same footing as all mankind--salvation is by faith in the person and atoning sacrifice (blood--
Romans 3:25) of Jesus Christ for the remission of their sin and right standing with God; i.e., "not guilty." And as with the rest of mankind, only a remnant believe now.
It is not certain that the offer of salvation by grace to individuals will be withdrawn
when Israel is restored and their kingdom received.
That prohecy of restoration was fulfilled in a remnant--just as the promises of God to Israel are fulfilled in a remnant today (
Romans 11:1-5,
23 )--when a remnant returned from exile, the Temple and the walls were rebuilt and the people rededicated themseles to God with great joy (
Nehemiah 12:43).
Authoritative NT
teaching allows for no
temporal restoration of Israel in a kingdom, for it presents the second coming, resurrection, rapture, and final judgment in the
last day, the
end of time (
John 6:39-40,
44,
54,
1 Corinthians 5:5,
1:8;
Philippians 1:6,
10,
2:16;
1 Thessalonians 5:2-6), with only eternity following in the new heaven and new earth (
2 Peter 3:10-13).
Authoritative NT
teaching presents the everlasting and eternal Messianic kingdom as
now (
Matthew 12:28), as spiritual--invisible and within (
Luke 17:20-21), in the hearts of those where Jesus reigns and rules. It is eternal and never ending (
Luke 1:33).
A future
temporal Messianic kingdom is in contradiction to
authoritative NT
teaching regarding the temporal and eternal Messianic kingdom
now.
We can know that those believers that were waiting for and anticipated that Israel would accept the kingdom "tasted the powers of the age to come" (Heb 6:5)
We can know no such thing.
That is a complete misrepresentation of Hebrews 6, which was written to new Hebrew Christians who were considering a return to Judaism, maybe because of persecution (the Jews were seriuously persecuting Christians), or maybe to merge with a Jewish sect like the one at Qumran near the Dead Sea, or whatever, and were being warned in this letter that if, after having seen the gospel and its benefits, they decided to reject the sacrifrice of Jesus Christ for Judaism, there would be no sacrifice for their sin, and they would die in their sin, condemned.
We can also know that salvation by grace was something new (Heb 11:40)
Unless you did not understand Jesus when he said those who
believe in the Son have eternal life (
John 3:16).