10 “And You, Lord God of virtues, God of Israel.” Thou God of Israel, that art thought to be but God of one nation, which worships You, when all nations worship idols, Thou God of Israel, “Give heed unto the visiting all nations.” Fulfilled be that prophecy wherein Isaiah in Your person speaks to Your Church, Your holy City, that barren one of whom many more are the sons of Her forsaken than of her that has a husband. To Her indeed has been said, “Rejoice, you barren, that bear not,” etc., more than of the Jewish nation which has a Husband, which has received the Law, more than of that nation which had a visible king.
For your king is hidden, and more sons to you there are by a hidden Bridegroom....The Prophet adds, “Enlarge the place of Your tabernacle, and Your courts fix thou: there is no cause for you to spare, extend further your cords, and strong stakes set thou again and again on the right and on the left.” Upon the right keep good men, on the left keep evil men, until there come the fan: occupy nevertheless all nations; bidden to the marriage be good men and evil men, filled be the marriage with guests; it is the office of servants to bid, of the Lord to sever.
“Cities which had been forsaken You shall inhabit:” forsaken of God, forsaken of Prophets, forsaken of Apostles, forsaken of the Gospel, full of demons. For You shall prevail; and blush not because abominable You have been. Therefore though there have risen up upon you strong men, blush not: when against the name of Christ laws were enacted, when ignominy and infamy it was to be a Christian. “Blush not because abominable You have been: for confusion for everlasting You shall forget, of the ignominy of Your widowhood You shall not be mindful.”...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)