23 And even those of Israel, if they do not persist in unbelief, will be grafted in, for God has the power to graft them in again. 24 For if you have been 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 natural branches be grafted back into their own olive tree.
25 So that you may not claim to be wiser than you are, brothers and sisters, I want you to understand this mystery: a hardening has come upon part of Israel, until the full number of the Gentiles has come in. 26 And so all Israel will be saved; as it is written, "Out of Zion will come the Deliverer; he will banish ungodliness from Jacob." 27 "And this is my covenant with them, when I take away their sins." 28 As regards the gospel they are enemies of God for your sake; but as regards election they are beloved, for the sake of their ancestors; 29 for the gifts and the calling of God are irrevocable.
Matthew Henry's Commentary on Romans 11:23-29
Commentary on Romans 11:22-32
(Read Romans 11:22-32)
Of all judgments, spiritual judgments are the sorest; of these the apostle is here speaking. The restoration of the Jews is, in the course of things, far less improbable than the call of the Gentiles to be the children of Abraham; and though others now possess these privileges, it will not hinder their being admitted again. By rejecting the gospel, and by their indignation at its being preached to the Gentiles, the Jews were become enemies to God; yet they are still to be favoured for the sake of their pious fathers. Though at present they are enemies to the gospel, for their hatred to the Gentiles; yet, when God's time is come, that will no longer exist, and God's love to their fathers will be remembered. True grace seeks not to confine God's favour. Those who find mercy themselves, should endeavour that through their mercy others also may obtain mercy. Not that the Jews will be restored to have their priesthood, and temple, and ceremonies again; an end is put to all these; but they are to be brought to believe in Christ, the true become one sheep-fold with the Gentiles, under Christ the Great Shepherd. The captivities of Israel, their dispersion, and their being shut out from the church, are emblems of the believer's corrections for doing wrong; and the continued care of the Lord towards that people, and the final mercy and blessed restoration intended for them, show the patience and love of God.