9215. 'It is his clothing for his skin' means that they also clothe relatively external things. This is clear from the meaning of 'clothing' as the sensory level in general or things on that level, as above; and from the meaning of 'skin' as that which is relatively external, which also clothes more internal things but still exists within those on the sensory level. What 'the skin' means, and who exactly correspond to the skin in the next life, see 3540, 5552-5559, 8977, 8980. The natural degree of the human mind has a rather internal level, a relatively external or middle level, and an outermost level. The more internal level of the natural is in contact with heaven; the middle or relatively external level is in contact on one side with the more internal, and through this with heaven, and on the other side with the outermost, and through this with the world, see 4009, 4570, 5118, 5126, 5497, 5649, 5707. The outermost level of the natural is that of the senses, which is meant here by 'clothing'. This level receives impressions of objects in the world and thereby serves more internal things. It is called 'his only covering' because it is the last and lowest and so is general to all, the relatively external or middle level of the natural being the one meant by 'skin'. From this it is evident that 'his clothing for his skin' means that the sensory level also clothes relatively external things. The fact that the sensory level is the last and lowest of a person's life, and so is a general covering, see 4009, 5077, 5125, 5128, 5767, 5774, 6201, 6313, 7442, 7693.

5497. 'And it was in the mouth of his pouch' means that it was returned as a gift and was put back in the opening of the exterior natural. This is clear from the meaning of 'the mouth of the pouch' as the opening of the exterior natural. Its having been put back there is implied from its very presence there, while its return as a gift follows from what was stated immediately before this, that no power of their own had been expended. Because 'the pouch' was in the preliminary part where the sack opened, nothing else is meant by 'the pouch' than the preliminary part of the receptacle, which is the exterior natural since this too is a preliminary part - 'a sack' being a receptacle, see 5489, 5494. So that anyone may know what the exterior natural and the interior natural are, let a further brief statement be made about them.

[2] One who is still a child cannot begin to think from anything higher than the exterior natural, for he composes his ideas out of sensory impressions. But as he grows up, employing sensory impressions to work out the reasons for things, he begins to think from the interior natural. For he begins to employ his sensory impressions to formulate ideas about truths which essentially are higher than sensory impressions; yet such ideas are still on a level with things in the natural world. But as he grows into a young adult, if he develops his power of reason, he employs what is in his interior natural to work out the reasons for things, which are truths of a yet higher nature. These are extracted so to speak from what is present in the interior natural. (The learned world calls the ideas composing thought which originate in this way intellectual and immaterial ideas, whereas ideas formed from factual knowledge present in both parts of the natural, insofar as these originate in the world and come through the senses, they call material ideas.) This is the manner in which a person rises with his understanding from the world up to heaven. Yet he does not go on into heaven with that understanding unless he accepts good from the Lord which is constantly present and flowing into him. If he does accept that good he is also endowed with truths, for in good all truths are welcome guests. And as he is endowed with truths, so he is endowed with understanding enabling him to have his being in heaven.