1. Multitudes were converted from idols to the living God. Those were the church's children that were born again, were partakers of a new and divine nature, by the word. More were the children of the desolate than of the married wife; there were more good people found in the Gentile church (when that was set up) that had long been afar off, and without God in the world, than ever were found in the Jewish church. God's sealed ones out of the tribes of Israel are numbered (Rev. vii. 4), and they were but a remnant compared with the thousands of Israel; but those of other nations were so many, and crowded in so thickly, and lay so much scattered in all parts, that no man could number them, v. 9. Sometimes more of the power of religion is found in those places and families that have made little show of it, and have enjoyed but little of the means of grace, than in others that have distinguished themselves by a flourishing profession; and then more are the children of the desolate, more the fruits of their righteousness, than those of the married wife; so the last shall be first. Now this is spoken of as matter of great rejoicing to the church, which is called upon to break forth into singing upon this account. The increase of the church is the joy of all its friends and strengthens their hands. The longer the church has lain desolate the greater will the transports of joy be when it begins to recover the ground it has lost and to gain more. Even in heaven, among the angels of God, there is an uncommon joy for a sinner that repents, much more for a nation that does so. If the barren fig-tree at length bring forth fruit, it is well; it shall rejoice, and others with it.