 A problem for any three-self Trinity theory is that numerically three selves are, it would seem, numerically three things. And according to a theory of essences or natures, a thing which has or which is an instance of an essence or nature is thereby a thing of a certain kind. All Trinity theories include the Nicene claim that the Persons of the Trinity have between them but one essence or nature, the divine one. But it would seem that by definition a thing with the divine essence is a god, and so three such things would be three gods.