The family and marriage are the foundation to all that we are in life. Most of our character is formed in family and marriage. Yet these things are fragile for much has to do with thoughts and feelings. They are built on the quality and consistency of relationships. But human fragility raises the need for God to hold together families and marriages. Where thoughts and feelings are weak, he is strong. Where they are ephemeral, he is everlasting. Where they are misdirected, he shows the way and helps us along it.
This illustrates the spiritual nature of life and also shows why exclusively human systems of thought are weak and prone to failure.