It is written, Isa_54:1. Some think that the apostle doth but allude to that of the prophet; and that the sense of the prophet was only to comfort the Jews, whose city, though it should be for a present time barren, thin of inhabitants, during the time of the Babylonish captivity; yet it should be again replenished with people, and be more populous than other cities. But the apostle seemeth rather to interpret that prophecy, than merely to allude to it; so that verse is one of those prophetical passages about the calling of the Gentiles, of which are many in that prophet. In this sense, the Gentiles are to be understood under the notion of the woman that was barren and desolate. The church of the Jews is represented under the notion of a woman that had a husband and children. The prophet, by the Spirit of prophecy, calleth upon the Gentiles, that brought forth no children to God, and to whom God was not a husband, to rejoice, and to cry out for joy, for there should be more believers, more children brought forth to God, amongst them, than were amongst the Jews: so as the church of the Gentiles are compared to Sarah, who was a long time barren, but then brought forth the child of the promise, the seed in which all the nations of the earth were to be blessed.