Ruth 4:7

“For, by the law, when a man died, the marriage bond with his wife was passed on to his brother or other male next of kin, in order that the seed of the brother or next of kin might renew the life of the house. And so it was that Ruth, though she was foreign-born, had possessed a husband of the Jewish people who had left a kinsman of near relation. Although she was seen and loved by Boaz while gleaning and maintaining herself and her mother-in-law with what she gleaned, she could not become the wife of Boaz until she had first loosed the shoe from him whose wife she ought, by the law, to have become.The story is a simple one, but deep are its hidden meanings, for that which was done was the outward signs of something more. If indeed we should stretch the sense so as to fit the letter exactly, we should almost find the words an occasion of a certain shame and horror, that we should regard them as intending and conveying the thought of common bodily intercourse. Rather it was the foreshadowing of one who was to arise from the Jewish people—whence Christ was, after the flesh—who should, with the seed of heavenly teaching, revive the seed of his dead kinsman, that is to say, the people, and to whom the precepts of the law, in their spiritual significance, assigned the sandal of marriage, for the espousals of the church.”

“It was an old custom that if a groom wished to divorce his bride he took off his sandal and this was the sign of the divorce. Consequently, he was ordered to take off his sandals, lest he approach the church wearing sandals like a bridegroom; for this office was reserved for Christ, who is the true bridegroom. However, the blessing of the ten elders showed that all Gentile peoples were saved and blessed in the name of Christ. For iota signifies ten in Greek, and this first letter will signify the name of the Lord Jesus in full; which shows, as we said, that all peoples are saved through him and are blessed. Therefore, let no one doubt these things that were said, since it may be seen that they were everywhere and from the beginning prefigured by antecedent figures; and they were clearly fulfilled in this way through the advent of the Lord; and which were superfluous, being completed in this way by the accord of all voiced in truth; and by all "figures" of the holy Scriptures, which he who promised [them] fulfilled through his son, Jesus Christ our Lord, king, and redeemer and savior, with whom is honor and glory from age to age. Amen.”