Romans 11:23-25

23And they also, if they do not continue in their unbelief, will be grafted in; for God is able to graft them in again.

24For if you were cut out of that which by nature is a wild olive tree, and grafted contrary to nature into a cultivated olive tree, how much more will these natural branches be grafted into their own olive tree?

25For I do not want you, brothers and sisters, to be ignorant of this mystery—lest you be wise in your own eyes—that a partial hardening has come upon Israel until the fullness of the Gentiles has come in;