Romans 11:23-25

23And they also, if they abide not still in unbelief, shall be grafted in: for God is able to graft them in again.

24For if thou wast cut out of the olive tree which is wild by nature, and wast grafted contrary to nature into a good olive tree: how much more shall these, which are the natural branches, be grafted into their own olive tree?

25For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part hath happened to Israel, until the fulness of the Gentiles shall be come in.1