Chapter 22 — Part II: The Sacraments — Matrimony
Section 32. Thus when Christ our Lord wished to give a sign of the intimate union that exists between Him and His Church and of His immense love for us, He chose especially the sacred union of man and wife. That this sign was a most appropriate one will readily appear from the fact that of all human relations there is none that binds so closely as the marriage-tie, and from the fact that husband and wife are bound to one another by the bonds of the greatest affection and love. Hence it is that Holy Writ so frequently represents to us the divine union of Christ and the Church under the figure of marriage.