....What may be understood by leprosy in a spiritual sense?
Sin, particularly impurity, by which the soul of man is stained much more than is the body by the most horrid leprosy: In the Jewish law (Lev. 13) three kinds of leprosy are enumerated: the leprosy of the flesh, of garments, and of houses. Spiritually, the impure are afflicted with the leprosy of the flesh who easily infect others, and are therefore to be most carefully avoided. The leprosy of garments consists in extravagance of dress and scandalous fashions, whereby not only individuals, but also whole communities are brought to poverty, and many lose their innocence. The leprosy of houses, finally, is to be found in those places, where scandalous servants are retained, where nocturnal gatherings of both sexes are encouraged, where, obscenities are indulged in, where unbecoming dances and plays are held, and filthy actions performed; where married people allow themselves liberties in presence of others, and give scandal to their household, where they take their small children and even such as already have the use of reason, with themselves to bed, where they permit children of different sexes to sleep together. Such houses are to be avoided, since they are infected with the pestilential leprosy of sin, and woe to them who voluntarily remain in them....
Sin, particularly impurity, by which the soul of man is stained much more than is the body by the most horrid leprosy: In the Jewish law (Lev. 13) three kinds of leprosy are enumerated: the leprosy of the flesh, of garments, and of houses. Spiritually, the impure are afflicted with the leprosy of the flesh who easily infect others, and are therefore to be most carefully avoided. The leprosy of garments consists in extravagance of dress and scandalous fashions, whereby not only individuals, but also whole communities are brought to poverty, and many lose their innocence. The leprosy of houses, finally, is to be found in those places, where scandalous servants are retained, where nocturnal gatherings of both sexes are encouraged, where, obscenities are indulged in, where unbecoming dances and plays are held, and filthy actions performed; where married people allow themselves liberties in presence of others, and give scandal to their household, where they take their small children and even such as already have the use of reason, with themselves to bed, where they permit children of different sexes to sleep together. Such houses are to be avoided, since they are infected with the pestilential leprosy of sin, and woe to them who voluntarily remain in them....