So...according to you, when Paul said:
But it is not as though the word of God has failed. For not all who are descended from Israel belong to Israel, and not all are children of Abraham because they are his offspring, but “Through Isaac shall your offspring be named.” This means that it is not the children of the flesh who are the children of God, but the children of the promise are counted as offspring. -Romans 9:6–8
And if you are Christ's, then you are Abraham's offspring, heirs according to promise. -Galatians 3:29
But if some of the branches were broken off, and you, although a wild olive shoot, were grafted in among the others and now share in the nourishing root of the olive tree, -Romans 11:17
But now that faith has come, we are no longer under a guardian, for in Christ Jesus you are all sons of God, through faith. For as many of you as were baptized into Christ have put on Christ. There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus. -Galatians 3:25–28
For all the promises of God find their Yes in him. That is why it is through him that we utter our Amen to God for his glory. -2 Corinthians 1:20
..we are to totally discount any of it, because he couldn't have meant what he says, when he claims that in Christ, believers are 'heirs of promise'. Instead, by your reasoning, because the original promises to Abraham...a Jew...was to Jews, Paul's promises that this was now, through Christ, also to all those IN Christ...is nonsense.
Except...Paul DOES say all that. He DOES apply those Abrahamic promises to the Church. So...reasoning that because Peter used a prophecy that was originally spoken by Joel..a Jew, and therefore it is only FOR Jews, doesn't stand the test of scripture itself, or how the Apostles apply it.
Pentecost was for everyone. Pentecost WAS for the Jews, because the early Church started with Jews. But there is no way you can deny that Pentecost was the start of the Church Age, when God chose to send the Helper in a very distinct way, different than any other time in history. And as soon as that happened, first to the Disciples, then to all the other Jews standing there, then those people there were 'Christians'...they were "In Christ". Did what Joel prophecy apply to them? Sure. But when other, Gentiles, began coming to Christ, it also applyed to them. How can I say so with assurance? Because Paul tells me....once "In Christ" we are one people, and all walls and divisions come down. And that while at one point Gentiles might have been 'strangers' to the promises and benefits of the commonwealth of Israel (Eph 2:12), now:
So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, -Ephesians 2:19
Seen any "giant locust" in the passage?
“‘And in the last days it shall be, God declares,
that I will pour out my Spirit on all flesh,
and your sons and your daughters shall prophesy,
and your young men shall see visions,
and your old men shall dream dreams;
even on my male servants and female servants
in those days I will pour out my Spirit, and they shall prophesy.
And I will show wonders in the heavens above
and signs on the earth below,
blood, and fire, and vapor of smoke;
the sun shall be turned to darkness
and the moon to blood,
before the day of the Lord comes, the great and magnificent day.
And it shall come to pass that everyone who calls upon the name of the Lord shall be saved.’ -Acts 2:17–21
It does not. It says "I will pour out my Spirit on all flesh". Not "Israel", but "all flesh". Now...there are two ways to interpret that...either...all flesh means every single person on the planet...which is doubtful, because everything else in scripture leads us to understand that only people who come to a saving faith in Christ receive the Holy Spirit....which leads us to the second interpretation....'all flesh' means 'all those who believe in Christ'.