17 But some of these branches from Abraham's tree-some of the people of Israel-have been broken off. And you Gentiles, who were branches from a wild olive tree, have been grafted in. So now you also receive the blessing God has promised Abraham and his children, sharing in the rich nourishment from the root of God's special olive tree. 18 But you must not brag about being grafted in to replace the branches that were broken off. You are just a branch, not the root. 19 "Well," you may say, "those branches were broken off to make room for me." 20 Yes, but remember-those branches were broken off because they didn't believe in Christ, and you are there because you do believe. So don't think highly of yourself, but fear what could happen. 21 For if God did not spare the original branches, he won't spare you either. 22 Notice how God is both kind and severe. He is severe toward those who disobeyed, but kind to you if you continue to trust in his kindness. But if you stop trusting, you also will be cut off. 23 And if the people of Israel turn from their unbelief, they will be grafted in again, for God has the power to graft them back into the tree. 24 You, by nature, were a branch cut from a wild olive tree. So if God was willing to do something contrary to nature by grafting you into his cultivated tree, he will be far more eager to graft the original branches back into the tree where they belong.

Matthew Henry's Commentary on Romans 11:17-24

Commentary on Romans 11:11-21

(Read Romans 11:11-21)

The gospel is the greatest riches of every place where it is. As therefore the righteous rejection of the unbelieving Jews, was the occasion of so large a multitude of the Gentiles being reconciled to God, and at peace with him; the future receiving of the Jews into the church would be such a change, as would resemble a general resurrection of the dead in sin to a life of righteousness. Abraham was as the root of the church. The Jews continued branches of this tree till, as a nation, they rejected the Messiah; after that, their relation to Abraham and to God was, as it were, cut off. The Gentiles were grafted into this tree in their room; being admitted into the church of God. Multitudes were made heirs of Abraham's faith, holiness and blessedness. It is the natural state of every one of us, to be wild by nature. Conversion is as the grafting in of wild branches into the good olive. The wild olive was often ingrafted into the fruitful one when it began to decay, and this not only brought forth fruit, but caused the decaying olive to revive and flourish. The Gentiles, of free grace, had been grafted in to share advantages. They ought therefore to beware of self-confidence, and every kind of pride or ambition; lest, having only a dead faith, and an empty profession, they should turn from God, and forfeit their privileges. If we stand at all, it is by faith; we are guilty and helpless in ourselves, and are to be humble, watchful, afraid of self-deception, or of being overcome by temptation. Not only are we at first justified by faith, but kept to the end in that justified state by faith only; yet, by a faith which is not alone, but which worketh by love to God and man.

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.