Even if it cannot be proved that Scripture condemns this sin by name, the tradition of the Church has rightly understood it to be condemned in the New Testament when the latter speaks of “impurity,” “unchasteness” and other vices contrary to chastity and continence. Sociological surveys are able to show the frequency of this disorder according to the places, populations or circumstances studied. In this way facts are discovered, but facts do not constitute a criterion for judging the moral value