[2] Two quite distinct and separate degrees exist in man - the rational and the natural. The rational constitutes the internal man and the natural the external; but the natural, like the rational also, has an external aspect of its own and an internal one. The external aspect of the natural is composed of the physical senses and of the impressions received from the world through these senses immediately. By means of his sensory impressions a person is in touch with things belonging to the world and to the body; and people who are confined solely to this natural are called sensory-minded because their thought goes scarcely at all beyond sensory experience. But the internal part of the natural is made up of ideas inferred - by the use of analysis and analogies - from what is in the external, even though it draws on and derives its ideas from sensory impressions. So the natural is in touch through the senses with things belonging to the world and to the body, and through ideas, arrived at by the use of analogy and analysis, with the rational, thus with things belonging to the spiritual world. Such is the composition of the natural. There is another part that exists between and has links with both of them - with the external aspect and with the internal - and so is in touch through the external with things in the natural world, and through the internal with those in the spiritual world. This external natural is represented specifically by 'Jacob', and the internal natural by 'Israel'. The situation is similar with the rational; that is to say, there is an external aspect and an internal, and a further one between the two. But this, in the Lord's Divine mercy, is to be discussed where Joseph is the subject, for 'Joseph' represents the external aspect of the rational.

[3] What the celestial-spiritual is however has been stated several times already - that essentially the celestial is good and the spiritual truth, so that the celestial-spiritual is that which is good resulting from truth. Now because the Lord's Church is both external and internal, and internal features of the Church had to be represented by the descendants of Jacob through things of an external nature, Jacob could not therefore be called Jacob any longer, but was called Israel - see what has been introduced already about these matters in 4286, 4292. Further to this it should be recognized that the terms celestial and spiritual are used both of the rational and of the natural. Celestial is used when people receive good, and spiritual when they receive truth from the Lord; for the good which flows from the Lord into heaven is called celestial, and the truth is called spiritual. In the highest sense the naming of Jacob as Israel means that the Lord progressed towards more interior aspects and made the Natural within Him Divine, both the external aspect of it and the internal. For in the highest sense that which is represented is the Natural itself.