sex, it also is first corporeal, for it commences from the flesh: next it becomes sensual, for the five senses receive delight from its common principle; afterwards it becomes natural like the same love with other animals, because it is a vague love of the sex; but as a man was born to become spiritual, it becomes afterwards natural-rational, and from natural-rational spiritual, and lastly spiritual-natural; and in this case, that love made spiritual flows into and acts upon rational love, and through this flows into and acts upon sensual love, and lastly through this flows into and acts upon that love in the body and the flesh; and as this is its ultimate plane, it acts upon it spiritually, and at the same time rationally and sensually; and it flows in and acts thus successively while the man is meditating upon it, but simultaneously while he is in its ultimate. The reason why fornication is of the natural man, is, because it proceeds proximately from the natural love of the sex; and it may become natural-rational, but not spiritual, because the love of the sex cannot become spiritual, until it becomes conjugial; and the love of the sex from natural becomes spiritual, when a man recedes from vague lust, and devotes himself to one of the sex, to whose soul he unites his own.
448. IV. Fornication is lust, but not the lust of adultery. The reasons why fornication is lust are, 1. Because it proceeds from the natural man, and in everything which proceeds from the natural man, there is concupiscence and lust; for the natural man is nothing but an abode and receptacle of concupiscences and lust, since all the criminal propensities inherited from the parents reside therein. 2. Because the fornicator has a vague and promiscuous regard to the sex, and does not as yet confine his attention to one of the sex; and so long as he is in this state, he is prompted by lust to do what he does; but in proportion as he confines his attention to one of the sex, and loves to conjoin his life with hers, concupiscence becomes a chaste affection, and lust becomes human love.
449. That the lust of fornication is not the lust of adultery, every one sees clearly from common perception. What law and what judge imputes a like criminality to the fornicator as to the adulterer? The reason why this is seen from common perception is, because fornication is not opposed to conjugial love as adultery is. In fornication conjugial love may lie stored up within, as what is spiritual may lie stored up in what is natural; yea, what is spiritual is also actually disengaged from what is natural; and when the spiritual is disengaged, then the natural encompasses it, as bark does its wood, and a scabbard its sword and also serves the spiritual as a defence against violence. From these considerations it is evident, that natural love, which is love to the sex, precedes spiritual love which is love to one of the sex; but if fornication comes into effect from the natural love of the sex, it may also be wiped away, provided conjugial love be regarded,
