Marriage is a covenant relationship, not merely a civil union. Covenant means God is the witness to our vows. He delights in blessing those who seek to do His will in marriage.
The words in the vows between the bride and groom become the basis for the union of the two becoming one. Covenant relationships are built upon trust. The bond of trust is the foundation of the covenant relationship.
Marriage is a heart-to-heart relationship. The heart is our mind, will, and emotions. In the intimacy of marriage we share all with our mate. Our hearts become transparent to each other. We share our thoughts, desires, and emotions. Our conversations share all. Transparent communication strengthens the bond of marriage. Both husband and wife must feel safe to share their hearts with one another.
Marriage is a sexual relationship. There is nothing evil about sex in marriage. It is God's idea. He blesses such an intimate relationship within the covenant boundaries of marriage. "Marriage is the uniting of one man and one woman in covenant commitment for a lifetime. It is God's unique gift to reveal the union between Christ and the church and to provide for the man and the woman the framework for intimate companionship, the channel of sexual expression according to biblical standards and the means for procreation of the human race."
Marriage is an intimate relationship ordained of God for us to give and receive love. It is to be a model for His covenant relationship with us in Christ. A marriage blessed of God is one which is built upon the foundation of His unconditional love.
The apostle Paul illustrates the covenant relationship between Christ and the church like the relationship between a husband and wife (Ephesians 5:22-33). The two become one through God's unconditional love.