Chapter 26 — Part III — The Ten Commandments
Section 591. Q. What motives does holy Scripture set before us to make us flee fornication and live chastely? A. It bids us keep our bodies in purity, because they are the members of Christ, and temples of the Holy Ghost; while, on the other hand, he who committeth fornication sinneth against his own body; that is, corrupts it, infects it with diseases, and, further, hurts his mental faculties, such as imagination and memory. See 1 Cor. vi. 15, 18, 19.