"An excellent mystery"

I am so excited that Douglas and I are planning to be married in a beautiful church in my hometown, St. Mark's Pro-Cathedral. The setting suits both of us perfectly and I pray the ceremony will be full of beauty, reverence, and truth. We asked the Dean if we could use the marriage ceremony from the 1662 Book of Common Prayer in lieu of the modern liturgy, and he is willing and amiable. Here's a beautiful prayer from near the end of the 1662 ceremony:

O God, who by thy mighty power hast made all things of nothing; who also (after other things set in order) didst appoint, that out of man (created after thine own image and similitude) woman should take her beginning; and, knitting them together, didst teach that it should never be lawful to put asunder those whom thou by Matrimony hadst made one: O God, who hast consecrated the state of Matrimony to such an excellent mystery, that in it is signified and represented the spiritual marriage and unity betwixt Christ and his Church: Look mercifully upon these thy servants, that both this man may love his wife, according to thy Word (as Christ did love his spouse the Church, who gave himself for it, loving and cherishing it even as his own flesh), and also that this woman may be loving and amiable, faithful and obedient to her husband; and in all quietness, sobriety, and peace, be a follower of holy and godly matrons. O Lord, bless them both, and grant them to inherit thy everlasting kingdom; through Jesus Christ our Lord. Amen.