Romans 11:23-25

New International Version - UK

²³ And if they do not persist in unbelief, they will be grafted in, for God is able to graft them in again. ²⁴ After all, if you were cut out of an olive tree that is wild by nature, and contrary to nature were grafted into a cultivated olive tree, how much more readily will these, the natural branches, be grafted into their own olive tree!

All Israel will be saved

²⁵ I do not want you to be ignorant of this mystery, brothers and sisters, so that you may not be conceited: Israel has experienced a hardening in part until the full number of the Gentiles has come in,