The marriage relation lies at the very root of the social system of nations. The public morality of a people, and the private happiness of the families which compose a people, are deeply involved in the whole question of the law of marriage. . . .
Happy are they, who in the matter of marriage observe three rules. The first is to marry only in the Lord, and after prayer for God’s approval and blessing. The second is not to expect too much from their partners, and to remember that marriage is, after all, the union of two sinners, and not of two angels. The third rule is to strive first and foremost for one another’s sanctification. The more holy married people are, the happier they are.
J.C. Ryle, Expository Thoughts on the Gospel of Mark (Carlisle: Banner of Truth, 1857, rep. 2000), 199-200.