Chapter 30 — Part III: The Decalogue — The Seventh Commandment
Section 9. Gravity Of The Sin Of Stealing — The grievousness of the sin of theft is sufficiently seen by the light of natural reason alone, for it is a violation of justice which gives to every man his own. The distribution and allotment of property, fixed from the beginning by the law of nations and confirmed by human and divine laws, must be considered as inviolable, and each one must be allowed secure possession of what justly belongs to him, unless we wish the overthrow of human society. Hence these words of the Apostle: Neither thieves, nor covetous, nor drunkards, nor railers, nor extortioners, shall possess the kingdom of God.