CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 1610–1613

1610 Moral conscience concerning the unity and indissolubility of marriage developed under the pedagogy of the old law. In the Old Testament the polygamy of patriarchs and kings is not yet explicitly rejected. Nevertheless, the law given to Moses aims at protecting the wife from arbitrary domination by the husband, even though according to the Lord's words it still carries traces of man's "hardness of heart" which was the reason Moses permitted men to divorce their wives.
1611 Seeing God's covenant with Israel in the image of exclusive and faithful married love, the prophets prepared the Chosen People's conscience for a deepened understanding of the unity and indissolubility of marriage. The books of Ruth and Tobit bear moving witness to an elevated sense of marriage and to the fidelity and tenderness of spouses. Tradition has always seen in the Song of Solomon a unique expression of human love, insofar as it is a reflection of God's love - a love "strong as death" that "many waters cannot quench."
1612 The nuptial covenant between God and his people Israel had prepared the way for the new and everlasting covenant in which the Son of God, by becoming incarnate and giving his life, has united to himself in a certain way all mankind saved by him, thus preparing for "the wedding-feast of the Lamb."
1613 On the threshold of his public life Jesus performs his first sign - at his mother's request - during a wedding feast. The Church attaches great importance to Jesus' presence at the wedding at Cana. She sees in it the confirmation of the goodness of marriage and the proclamation that thenceforth marriage will be an efficacious sign of Christ's presence.