10. Anyone of sound mind, even if not religious, can see that anything which is divided must of itself fall apart unless it is dependent upon a single origin. For instance, a human being, who is built up of so many members, viscera, sensory and motor organs, would collapse if he did not depend on a single soul; so would the body, but for its single heart. In the same way a kingdom depends upon having a single king, a household on a single master, and every department of the administration, of which there are many kinds in every kingdom, upon a single official. How effective would an army be in fighting the enemy without a general in overall command, and officers subordinate to him, each exercising his authority over the common soldiers? It would be the same with the church, if it did not acknowledge one God; or with the heaven of angels, which is, so to speak, the head of the church on earth; there too the Lord is their very soul. This is why heaven and the church are called His body. If both did not acknowledge one God, they would resemble a lifeless body, which is cast out and buried, as being of no further use.