In another sermon he praises the edification provided in the married state, when “man and wife are united in love and serve each other faithfully”; Luther invites them to thank God “that the married state is profitable alike to body, property, honour and salvation.” “What, however, is best of all in married life,” so he insists, “for the sake of which everything must be suffered and endured, is that God may give offspring and command us to train it in His service. This is earth’s noblest and most priceless work, because God loves nothing so well as to save souls.”[453] Such exhortations of Luther’s, apart from peculiarities of expression, differ from those of earlier writers only in that those authors, relying on the traditional, sacramental conception of the matrimonial union, had an even greater right to eulogise marriage and the blessing of children. Catholic preachers might quite profitably have made use of the greater part of a wedding discourse delivered by Luther in 1531,[454] though they might have failed to emulate the force and emphasis with which it was uttered. His theme there is “that marriage is to be held in honour”; he quotes Hebr. xiii. 4, “Marriage is honourable in all, and the bed undefiled”; he continues: “It is true that our flesh is full of evil lusts which entice us to sin, but to these we must not consent; if, however, you hold fast to the Word of God and see to it, that this state is blessed and adorned, this will preserve and comfort you, and make of it a holy state for you.”[455] It was necessary, he continues, not merely to fight against any sensual lusts outside of the marriage bond, but also to cultivate virtue. Conjugal fidelity must be preserved all the more carefully since “Satan is your enemy and your flesh wanton.” “Fornication and adultery are the real stains which defile the marriage bed.” “Married persons are embraced in the Word of God.” This they must take as their guide, otherwise (here Luther’s language ceases to be a pattern) “the bed is soiled, and, practically, they might as well have passed their motions in it.”[456]