465.  III.  IT IS POLYGAMY WHICH HAS BEEN CONDEMNED, AND IS TO BE CONDEMNED, BY THE CHRISTIAN WORLD.  That simultaneous concubinage, or concubinage conjoined with a wife, is polygamy, although not acknowledged to be such, because it is not so declared, and thus not so called by any law, must be evident to every person of common discernment; for a woman taken into keeping, and made partaker of the conjugial bed is like a wife.  That polygamy has been condemned, and is to be condemned by the Christian world, has been shewn in the chapter on polygamy, especially from these articles therein:  A Christian is not allowed to marry more than one wife; n. 338:  If a Christian marries several wives, he commits not only natural, but also spiritual adultery; n. 339:  The Israelitish nation was permitted to marry several wives, because the Christian church was not with them; n. 349.  From these considerations it is evident, that to adjoin a concubine to a wife, and to make each a partner of the bed, is filthy polygamy.

466.  IV.  IT IS AN ADULTERY WHEREBY THE CONJUGIAL PRINCIPLE, WHICH IS THE MOST PRECIOUS JEWEL OF THE CHRISTIAN LIFE IS DESTROYED. That it is more opposed to conjugial love than simple adultery; and that it is a deprivation of every faculty and inclination to conjugial life, which is implanted in Christians from birth, may be evinced by arguments which will have great weight with the reason of a wise man.  In regard to the FIRST POSITION,—­that simultaneous concubinage, or concubinage conjoined with a wife, is more opposed to conjugial love than simple adultery, it may be seen from these considerations:  that in simple adultery there is not a love analogous to conjugial love; for it is only a heat of the flesh, which presently cools, and sometimes does not leave any trace of love behind it towards its object; wherefore this effervescing lasciviousness, if it is not from a purposed or confirmed principle, and if the person guilty of it repents, detracts but little from conjugial love.  It is otherwise in the case of polygamical adultery:  herein there is a love analogous to conjugial love; for it does not cool and disperse, or pass off into nothing after being excited, like the foregoing; but it remains, renews and strengthens itself, and so far takes away from love to the wife, and in the place thereof induces cold towards her; for in such case it regards the concubine courtezan as lovely from a freedom of the will, in that it can retract if it pleases; which freedom is begotten in the natural man:  and because this freedom is thence grateful, it supports that love; and moreover, with a concubine the unition with allurements is nearer than with a wife; but on the other hand it does not regard a wife as lovely, by reason of the duty of living with her enjoined by the covenant of life, which it then perceives as far more constrained in consequence of the freedom enjoyed with another woman.  It is plain that love for a wife grows cold, and she