377. Obedience to unjust laws is not obligatory in the following cases. (a) If a law is opposed to the rights of God, it is not lawful to do what that law commands or permits, nor to omit what it forbids. Examples: If a law permits one to practise polygamy, or commands one to blaspheme religion, one may not use the permission or obey. If a law forbids one to give or receive Baptism, it has no force. (b) If a law is certainly opposed to the rights of man in any of the three ways mentioned in the previous paragraph (376, b), it does not of itself oblige in conscience, since it lacks some essential condition of a true law, and even the consent of the majority or of all does not make it just. However, it may oblige accidentally, on account of the greater evils that would follow on disobedience, such as scandal, civil disturbances, etc. The duty of subjects is to remonstrate against such a law and to work for its repeal. 378. The obligation of all laws is not the same in kind, or degree. (a) Moral laws oblige one to do what is commanded or to omit what is forbidden, as a duty owed in conscience; hence, he who violates a law of this kind is guilty of moral fault. Penal laws oblige one to follow what they prescribe, if one would be free from guilt before the law and not liable in conscience to the penalty prescribed; hence, he who violates a penal law is guilty of juridical fault, and, if he further illegally resists the penalty, he becomes guilty also of moral fault. (b) Moral laws are not all of the same obligatory force, some of them obliging under grave sin, others under venial sin. 379. The following human laws are recognized as moral laws: (a) ecclesiastical laws, with few exceptions; (b) civil laws that confirm the Eternal or Divine Law, or that pertain directly to the common welfare, such as the laws that determine the duties of public officials, the rights of inheritance, etc. 380. The following human laws are generally regarded as merely penal: (a) ecclesiastical laws which expressly state that their observance is not required under pain of sin (e.g., the statutes of many Religious Orders); (b) civil laws of minor importance, or which the legislator imposes as a purely civil duty (e.g., some traffic regulations). 381. Moral laws oblige under grave sin if the two following conditions are present: (a) if the thing prescribed by the law is of great importance, because of its nature or circumstances; (b) if the lawgiver intended to impose a grave obligation. 382. A matter of light moment cannot be made the object of a law that binds under grave sin, for this would impose an intolerable burden, and would thus be contrary to the common good. What is unimportant in itself, however, may become important on account of its purpose or other circumstance.