In a successful marriage, both partners are committed to helping each other reach their full potential. The desire to help the person you love the most to become all he or she can be is a healthy motivation for marriage. The bounds of the marital union provide an ideal environment in which husbands and wives can strive to express their fullest personal, spiritual, and professional potential. In partnership together they can encourage one another, lift up one another, pray for one another, defend one another, challenge one another, comfort one another, and affirm one another.
Because it comes from God, marriage is designed for believers: men and women who walk by faith and not by sight and live in a daily and growing personal love relationship with Jesus Christ. Both husband and wife together should continually encourage each other to grow in the Lord. They should worship together, pray together, read and discuss the Scriptures together, and hold each other accountable for their spiritual walk with Christ.
(from The Purpose and Power of Love and Marriage)