Adultery of this type is distinguished from the previous types by its sources. The source of adultery of this type is the corrupt will people have by birth, that is, by hereditary evil. Once a person reaches the point of making his own judgments, he blindly obeys his will, making no judgment whether his acts are evil or not. It is therefore said that he does not consider them worth taking into consideration by the intellect. The source of adultery of the type called adultery of the reason is a perversion of the intellect; this is committed by those who are convinced that such acts are not sinful evils. In this case the intellect plays the leading part, but in the other it is the will which does this.

The difference between these two is not apparent to a person in the natural world, but is obvious to angels in the spiritual world. There all are generally speaking distinguished according to the evils which well up from their source in the will or the intellect, and are accepted and made one's own. In hell too this is the principle of separation; here those whose wickedness comes from the intellect live further forward and are called satans. But those whose wickedness comes from the will live further back and are called devils. This universal distinction explains why the Word speaks of Satan and the devil.

In the case of the wicked, and also the adulterers, called satans the intellect plays the leading part; but in the case of those called devils, it is the will which does this. However, it is impossible to explain the distinctions so as to make them visible to the intellect, unless the distinctions of the will and the intellect have first been grasped; and also unless a description has been given of how the mind is formed by the will by means of the intellect, and how it is formed by the intellect by means of the will. A knowledge of these subjects will cast light enough to allow the reason to see the distinctions mentioned above; but this would need a whole book.