Romans 11:12, 15
Now if their trespass means riches for the world, and if their failure means riches for the Gentiles, how much more will their full inclusion mean? … For if their rejection means the reconciliation of the world, what will their acceptance mean but life from the dead?
Charles Spurgeon (1834–1892)
“Joy Born at Bethlehem”
Until that shall be, the fullness of the church’s glory can never come. Matchless benefits to the world are bound up with the restoration of Israel; their gathering in shall be as life from the dead.
Thomas Aquinas (1274)
Commentary on Romans 11:
How much more will the fullness of them, i.e., their spiritual abundance or their multitude converted to God, result in riches for the gentiles? My abode is in the full assembly of saints (Sir 24:16). And so, if for the benefit of the whole world God permitted the Jews to do wrong and be diminished, much more will he repair their disaster for the benefit of the whole world.
Catechism of the Catholic Church
Source
The “full inclusion” of the Jews in the Messiah’s salvation, in the wake of “the full number of the Gentiles”, will enable the People of God to achieve “the measure of the stature of the fullness of Christ”, in which “God may be all in all”.
John Gill (1667–1771)
Commentary on the Entire Bible
This argument, as before, in Romans 11:12, is from the lesser to the greater, showing that as the Gentiles received present advantage through the rejection of the Jews, they would receive far greater at their future recovery, and which proves that their rejection is not final
Geneva Bible Commentary (1599)
Commentary on Romans 11:15
but when both they and the Gentiles shall embrace Christ, the world shall be restored to a new life.
Matthew Henry (1662–1714)
Source
It is said to be their fulness (v. 12), that is, the addition of them to the church, the filling up again of that place which became vacant by their rejection. This would be the enriching of the world (that is, the church in the world) with a great deal of light and strength and beauty.
Robert Leighton (1611–1684)
Source (page 125)
But undoubtedly, that people of the Jews shall once more be commanded to arise and shine, and their return shall be the riches of the Gentiles; and that shall be a more glorious time than ever the Church of God did yet behold