Since adultery is hell in man and marriage is heaven in him, it follows that so far as a man loves adultery he removes himself from heaven; consequently adulteries close heaven and open hell, and this they do so far as they are believed to be allowable and are perceived to be more delightful than marriages. The man, therefore, who confirms himself in adulteries and commits them from the favor and consent of his will, and turns away from marriage, closes heaven to himself, until finally he ceases to believe anything of the church or of the Word, and becomes a wholly sensual man, and after death an infernal spirit; for, as has been said above, adultery is hell, and thus an adulterer is a form of hell. And since adultery is hell it follows that unless a man abstains from adulteries and shuns them and turns away from them as infernal he shuts up heaven to himself, and does not receive the least influx therefrom. Afterward he reasons that marriages and adulteries are alike, but that marriages must be maintained in kingdoms for the sake of order and the training of offspring; also that adulteries are not criminal, since children are equally born from them; and they are not harmful to women, since they can endure them, and by them the procreation of the human race is promoted. He does not know that these and other like reasonings in favor of adulteries ascend from the Stygian [extremely dark] waters of hell, and that the lustful and bestial nature of man which inheres in him from birth attracts them and sucks them in with delight, as a swine does excrement. That such reasonings, which at this day possess the minds of most men in the Christian world, are diabolical, will be seen. (A.E., n. 982.) That marriage is heaven and that adultery is hell cannot be better seen than from considering their origin. The origin of true marriage love is the Lord's love for the church; and this is why the Lord is called in the Word a "Bridegroom" and a "Husband," and the church a "bride" and a "wife." It is from this marriage that the church is a church in general and in particular. The church in particular is a man in whom the church is. From this it is clear that the Lord's conjunction with a man of the church is the very origin of true marriage love; and how that conjunction can be the origin shall be told. The Lord's conjunction with a man of the church is a conjunction of good and truth; good is from the Lord, and truth is a man, and from this is the conjunction that is called the heavenly marriage, and from that marriage true marriage love exists between the married pair that are in such conjunction with the Lord. From this it is now evident that true marriage love is from the Lord alone, and exists in those who are in the conjunction of good and truth from the Lord. As this conjunction is reciprocal it is said by the Lord that They are in Him, and He in them (John xiv. 20).