All Gentiles who now believe have been grafted into the same kind of "blessings" of Israel.
But, they were not grafted into Israel itself.
For? They can not be Israel! Not even a Jew today who is saved is any longer Israel!
“There is no longer Jew or Greek, there is no longer slave or free, there is
no longer male and female; for all of you are one in Christ Jesus.” Galatians 3:28
For there is neither Jew nor Gentile in Christ Jesus! We have all become a "new creation." We did not become the same old Israel.
Israel still remains Israel (those who are not in Christ) and after the Rapture Israel will once more be God's role model for the rest
of the world.
But, now? All who believe in Christ? They can not become Israel. For they can not be Jews!
What the Church has has been grafted into is the position that Israel once enjoyed for receiving blessings of what was
once for Israel, when the Jews were faithful to God.
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, do not be arrogant
toward the branches. If you are, remember it is not you who support the root, but the root that
supports you." Romans 11:17-18
Like Israel once had received the blessings (from the nourishing root) from God?
Blessings that are unique for God's chosen?
So it has now become for the Church.
But we are not grafted into Israel. Instead, we have been grafted into the "benefits" once enjoyed by Israel.
The Church is the Church. And, Israel will remain being Israel. Israel will be grafted back in when God restores Israel as his nation of regeneration.
grace and peace .........................