The biblical context of marriage, affirmed and reinforced by Jesus Christ, is the original divine ordinance, and the foundation on which any functional civilization is to be built.
The recent hack of adultery website Ashley Madison is a reminder that sin is never truly hidden.
Sex and the History of Christianity
The church's historical attitudes toward sex, sexuality and marriage from the first century through to the present day have often been in error. Rather than something to be repressed or brazenly flaunted, sex is a gift of God to mankind, to be enjoyed and celebrated within the God-ordained context of marriage between one man and one woman.
Augustine on the Good of Marriage (Part 1)
Augustine's theology of marriage hinges on the three goods of marriage: children, fidelity, and sacrament. The denial of these goods is a critical point in contemporary efforts to redefine marriage.