CHAPTER XIX ORIGINAL SIN.—(Peccatum Habituale.) 1. How is original sin to be defined? See “Confession of Faith,” Chapter vi.; “L. Cat.,” Questions 25, 26; “S. Cat,” Question 18. The phrase, original sin, is used sometimes to include the judicial imputation of the guilt of Adam’s sin, as well as the hereditary moral corruption, common to all his descendants, which is one of the consequences of that imputation. More strictly, however, the phrase original sin designates only the hereditary moral corruption