God has ordained the family as the foundational institution of human society. It is composed of persons related to one another by marriage, blood, or adoption.
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 His church and to provide for the man and the woman in marriage the framework for intimate companionship, the channel of sexual expression according to biblical standards, and the means for procreation of the human race.
The husband and wife are of equal worth before God, since both are created in God's image. The marriage relationship models the way God relates to His people. A husband is to love his wife as Christ loved the church. He has the God-given responsibility to provide for, to protect, and to lead his family. A wife is to submit herself graciously to the servant leadership of her husband even as the church willingly submits to the headship of Christ. She, being in the image of God as is her husband and thus equal to him, has the God-given responsibility to respect her husband and to serve as his helper in managing the household and nurturing the next generation.