Diuturnum §11

¹¹ And, indeed, nature, or rather God who is the Author of nature, wills that man should live in a civil society; and this is clearly shown both by the faculty of language, the greatest medium of intercourse, and by numerous innate desires of the mind, and the many necessary things, and things of great importance, which men isolated cannot procure, but which they can procure when joined and associated with others. But now, a society can neither exist nor be conceived in which there is no one to govern the wills of individuals, in such a way as to make, as it were, one will out of many, and to impel them rightly and orderly to the common good; therefore, God has willed that in a civil society there should be some to rule the multitude. And this also is a powerful argument, that those by whose authority the State is administered must be able so to compel the citizens to obedience that it is clearly a sin in the latter not to obey. But no man has in himself or of himself the power of constraining the free will of others by fetters of authority of this kind. This power resides solely in God, the Creator and Legislator of all things; and it is necessary that those who exercise it should do it as having received it from God. "There is one lawgiver and judge, who is able to destroy and deliver."(13)And this is clearly seen in every kind of power. That that which resides in priests comes from God is so acknowledged that among all nations they are recognized as, and called, the ministers of God. In like manner, the authority of fathers of families preserves a certain impressed image and form of the authority which is in God, "of whom all paternity in heaven and earth is named."(14) But in this way different kinds of authority have between them wonderful resemblances, since, whatever there is of government and authority, its origin is derived from one and the same Creator and Lord of the world, who is God.