Why does God ordain marriage? (Q311)
From To Be A Christian, An Anglican Catechism
God ordains marriage for three important purposes: for the procreation of children to be brought up in the nurture and admonition of the Lord; for a remedy against sin and to avoid fornication; and for mutual friendship, help, and comfort, both in prosperity and adversity. (Genesis 1:28; Deuteronomy 6:7; Proverbs 22:6; 31:10-12; 1 Corinthians 7:2-5; Book of Common Prayer)