Malachi 2:10-16.

Marriage has a design. And God's design is that marriage reflect the faithful covenantal sovereign love of God. When a man and a woman enter into the covenant of marriage and fight for faithfulness their marriage will 'speak' the good news of God's grace to those around them. The problem is that we can be so unfaithful; in our marriages and to our God. The good news of Jesus is that He is our True Husband who remains faithful even when we are faithless.