For if you were cut from what is by nature a wild ..

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For if you were cut from what is by nature a wild olive tree, and grafted, contrary to nature, into a cultivated olive tree, how much more will these, the natural branches, be grafted back into their own olive tree.
Romans 11:24 ESV

It is easier to graft a branch of the same cultivar than of a different variety. God has the power to graft into Israel wild branches who have no heritage of the Law and the Prophets, so he surely has the power to restore those who do have that heritage.

The Jewish sages had been studying the Scriptures for a thousand years before there was a single gentile Christian scholar. They have much error, but this is part of the temporary blinding that God has imposed on them (see vs 11 and 25). When God removes the spiritual blindfold on the seed of Abraham, they will return to him en masse. The world will see the greatest revival it has ever known.

https://tube.ttn.place/v/XxVOjc