For it is written,
Rejoice, you barren that bear not; break forth and cry, you that travail not: for the desolate has many more children than she who has a husband.
All Commentaries on Galatians 4:27 Go To Galatians 4
John Chrysostom
AD 407
Who is the woman with the husband? Is it not obviously the synagogue [as married to the law]? Yet the barren one has surpassed her in childbearing. For the synagogue contains one nation, whereas the children of the church fill Greece, Africa, land, sea and the whole inhabited world. Do you see how Sarah foreshadowed our future in deeds and the prophet in words? Homily on Galatians