Most young people today do not bring to their courtship and marriage a great vision of God—who He is, what He is like, how He acts. In the world there is almost no vision of God. He is not even on the list to be invited. He is simply and breathtakingly omitted. And in the church the view of God that young couples bring to their relationship is so small instead of huge, and so marginal instead of central, and so vague instead of clear, and so impotent instead of all-determining, and so uninspiring instead of ravishing, that when they marry, the thought of living marriage to the glory of God is without meaning and without content.
[So] if we want marriage to glorify the truth and worth and beauty and greatness of God, we must teach and preach less about marriage and more about God. Not that we preach too much on marriage, but that we preach too little on God. God is simply not magnificently central in the lives of most of our people. He is not the sun around which all the planets of our daily lives are held in orbit and find their proper, God-appointed place. He is more like the moon, which waxes and wanes, and you can go for nights and never think about Him. – John Piper from Building Strong Families