the Nashville Statement, Article 1

WE AFFIRM that God has designed marriage to be a covenantal, sexual, procreative, lifelong union of one man and one woman, as husband and wife, and is meant to signify the covenant love between Christ and his bride the church.  WE DENY that God has designed marriage to be a homosexual, polygamous, or polyamorous relationship. We also deny that marriage is a mere human contract rather than a covenant made before God.