Song of Solomon 7:1

In every way, then, [the beauty of her feet] seems to me to be understood to follow the first fruits of praise in this people who are imitators of the footsteps of those who follow Christ to heaven by dying in the [steps of the] blessed prince of the apostles. Thus does this people, through its earthly works in the example of blessed Peter, by mortifying its flesh, migrate to heaven, just as it also comes into the light from the shadows of ignorance by following Christ the Head.

The virgin bridegroom, having been praised by the virgin bride, in turn praises the virgin bride and says to her, "How beautiful are your feet in sandals, O daughter of Aminadab," which is, being interpreted, a people that offers itself willingly. For virginity is voluntary, and therefore the steps of the church in the beauty of chastity are praised. This is not the time for me like a commentator to explain all the mysteries of virginity from the Song of Songs. I have no doubt that the fastidious reader will turn up his nose at what has already been said.

The joining of your thighs is like a necklace, etc. Scripture often uses the thighs to symbolize the succession of offspring. For it says: All the souls that entered with Jacob into Egypt, and came out from his thigh, apart from the wives of his sons, were sixty-six souls (Gen. XLVI). Thus, in the thighs of the Church, rightly is its offspring taken as the spiritual generation, which is fulfilled through the mystery of the Word and the cleansing of regeneration. But the joining of its thighs is the unity of two peoples. Namely, the Jew and the Gentile, from which, united in one faith, the universal Church is perfected, and is increased and made fruitful with spiritual offspring until the end of the world. This joining is also likened to necklaces because the Catholic faith is declared by the testimony of good works. Moreover, these necklaces are crafted by the hand of a craftsman because the works of virtues, by which the Church is built from two peoples into one, are strengthened by the ineffable generosity of our Creator. For He is that craftsman of whom the Apostle says: And coming, he preached peace to you who were far off; and peace to those who were near, because through him we both have access in one Spirit to the Father (Eph. II). And of whose marvelous craftsmanship the Psalmist states: The stone which the builders rejected, this has become the chief cornerstone. This was done by the Lord, and it is marvelous in our eyes (Ps. CXVII). Of this craftsman's praise, the Apostle remembers Abraham the patriarch, saying: For he was looking for the city which has foundations, whose architect and builder is God (Heb. II). Properly, then, after the sandaled steps of the bride, the joining of the thighs is praised, because through the ministry of preachers, the unanimous joining of believing peoples is perfected: and aptly, in these places, the joining of the thighs is brought to mind, where Judah, gathered in faith at the end, promised to be united in Christ, is the partner of both peoples. It continues: