Psalms 47:3

If, then, the whole earth has been cursed in the deeds of Adam and of those who died in him, it is plain that all parts of the earth share in the curse, and among others the land of Judea; so that the words, “a good land and a large, a land flowing with milk and honey, cannot apply to it, although we may say of it, that both Judea and Jerusalem were the shadow and figure of that pure land, goodly and large, in the pure region of heaven, in which is the heavenly Jerusalem. And it is in reference to this Jerusalem that the apostle spoke, as one who, “being risen with Christ, and seeking those things which are above,” had found a truth which formed no part of the Jewish mythology. …

XIII. But here, as in port, putting in the vessel that bears the ensign of the cross, let us reef the sails of our oration, in order that it may be with itself commensurate. Only first, in as few words as possible, let us salute the city of the Great King together with the whole body of the Church, as being present with them in spirit, and keeping holy-day with the Father, and the brethren most held in honour there. Hail, thou city of the Great King, in which the mysteries of our salvation are consummated. Hail, thou heaven upon earth, Sion, the city that is for ever faithful unto the Lord. …

25. With how much greater force, moreover, may we say to you what we are accustomed to say to all the Donatists: If any can have good grounds (which indeed none can have) for separating themselves from the communion of the whole world, and calling their communion the Church of Christ, because of their having withdrawn warrantably from the communion of all nations, how do you know that in the Christian society, which is spread so far and wide, there may not have been some in a very remote place, from which the fame of their righteousness could not reach you, who had already, before the date of your separation, separated themselves for some just cause from the communion of the whole world? How could the Church in that case be found in your sect, rather than in those who were separated before you? Thus it comes to pass, that so long as you are ignorant of this, you cannot make with certaint …

Therefore let the Church of Christ, the city of the great King, full of grace, prolific of offspring, let her say what the prophecy uttered about her so long before by the mouth of this pious mother confesses, “My heart is made strong in the Lord, and my horn is exalted in my God.” Her heart is truly made strong, and her horn is truly exalted, because not in herself, but in the Lord her God. “My mouth is enlarged over mine enemies;” because even in pressing straits the word of God is not bound, not even in preachers who are bound. “I am made glad,” she says, “in Thy salvation.” This is Christ Jesus Himself, whom old Simeon, as we read in the Gospel, embracing as a little one, yet recognizing as great, said, “Lord, now lettest Thou Thy servant depart in peace, for mine eyes have seen Thy salvation.” Therefore may the Church say, “I am made glad in Thy salvation. …

Then let him look upon His Church, joined to her so great Husband in spiritual marriage and divine love, of which it is said in these words which follow, “The queen stood upon Thy right hand in gold-embroidered vestments, girded about with variety. Hearken, O daughter, and look, and incline thine ear; forget also thy people, and thy father’s house. Because the King hath greatly desired thy beauty; for He is the Lord thy God. And the daughters of Tyre shall worship Him with gifts; the rich among the people shall entreat Thy face. The daughter of the King has all her glory within, in golden fringes, girded about with variety. The virgins shall be brought after her to the King: her neighbors shall be brought to Thee. They shall be brought with gladness and exultation: they shall be led into the temple of the King. …

It is certainly not fecundity only, the fruit of which consists of offspring, nor chastity only, whose bond is fidelity, but also a certain sacramental bond in marriage which is recommended to believers in wedlock. Accordingly it is enjoined by the apostle: “Husbands, love your wives, even as Christ also loved the Church.” Of this bond the substance undoubtedly is this, that the man and the woman who are joined together in matrimony should remain inseparable as long as they live; and that it should be unlawful for one consort to be parted from the other, except for the cause of fornication. For this is preserved in the case of Christ and the Church; so that, as a living one with a living one, there is no divorce, no separation for ever. …

3. Further,…when he had said, “in the city of our God, in His holy mountain,” what added he? “Spreading abroad the joys of the whole earth, the mountains of Sion” ( ver. 2 ). Sion is one mountain, why then “mountains”? Is it that to Sion belonged also those which came from the other side, so as to meet together on the Corner Stone, and become two walls, as it were two mountains, one of the circumcision, the other of the uncircumcision; one of the Jews, the other of the Gentiles: no longer adverse, although diverse, because from different sides, now in the corner not even diverse. …

Next, to lead them farther away from swearing by God, He saith, “Neither by Heaven, for it is God’s throne, nor by the earth, for it is the footstool of His feet; nor by Jerusalem, for it is the city of the great King:”still speaking out of the prophetical writings, and signifying Himself not to be opposed to the ancients. This was because they had a custom of swearing by these objects, and he intimates this custom near the end of his Gospel.