“Have you not read that the one who made them at the beginning ‘made them male and female,’ and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? So they are no longer two, but one flesh. Therefore what God has joined together, let no one separate.”
(Matthew 19:4-6, NRSV)
"Marriage is a gift of God, intended for the joy and mutual strength of those who enter it and for the well-being of the whole human family. God created us male and female and blessed humankind with the gifts of companionship, the capacity to love, and the care and nurture of children. Jesus affirmed the covenant of marriage and revealed God's own self-giving love on the cross. The Holy Spirit helps those who are united in marriage to be living signs of God's grace, love, and faithfulness.
Marriage is also a human estate, with vows publicly witnessed. The church in worship surrounds these promises with the gathering of God's people, the witness of the word of God, and prayers of blessing and intercession."
-Evangelical Lutheran Worship, pg. 286