Matrimony is not only a natural contract between husband and wife, but it has been elevated for Christians, by Jesus Christ, to the dignity of a Sacrament: “Husbands,” says the Apostle, “love your wives, as Christ also loved the Church and delivered Himself up for it, ... so also ought men to love their wives as their own bodies.... For this cause shall a man leave his father and mother, and shall adhere to his wife and they shall be one flesh. This is a great sacrament: but I speak in Christ and in the Church.”
In these words the Apostle declares that the union of Christ with His Church is the type or model of the bond subsisting between man and wife. Now the union between Christ and His Church is supernatural and sealed by Divine grace. Hence, also, is the fellowship of a Christian husband and wife cemented by the grace of God. - Cardinal Gibbons
