NET
23 And even they—if they do not continue in their unbelief—will be grafted in, for God is able to graft them in again.
Darby
23 And *they* too, if they abide not in unbelief, shall be grafted in; for God is able again to graft them in.
KJV
23 And they also, if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again.