Chapter 24 — Part III: The Decalogue — The First Commandment
Section 25. Some, supposing these words which come next in order to constitute a distinct precept, reduce the ninth and tenth Commandments to one. St. Augustine, on the contrary, considering the last two to be distinct Commandments, makes the words just quoted a part of the first Commandment. His division is much approved in the Church, and hence we willingly adopt it. Furthermore, a very good reason for this arrangement at once suggests itself. It was fitting that to the first Commandment should be added the rewards or punishments entailed by each one of the Commandments.