'Ultimately marriage is a flesh-and-blood drama of how Christ (dramatized by the husband) loves his church, and how the church (dramatized by the wife) is devoted to Christ. And this flesh-and-blood drama creates the setting - the physical, emotional, moral, spiritual nest - for the other purpose of marriage, namely, brining children into the world and bringing them to Jesus.'
John Piper, This Momentary Marriage, p.147.