141. (ii) Chastity is only attributed to monogamous marriages, that is, between one man and one wife.
Chastity can only be attributed to them, because in their case conjugial love does not stay in the natural man, but enters into the spiritual man; and by stages it opens up the way to the spiritual marriage itself, between good and truth, which is its origin, and establishes a link with it. That love enters the more as wisdom increases, and this happens as the church is planted in a person by the Lord, as has been shown at length above. This cannot happen in the case of polygamists, since they divide conjugial love, and when divided it is not very different from sexual love, which is essentially natural. But some interesting details on this subject will be seen in the chapter on polygamy [332-342].