9726. 'And you shall make for it a grating, a network' means the level of sensory perception, which is the last and lowest. This is clear from the meaning of 'a grating, a network' as external sensory perception, thus that which forms for a person the last and lowest level of life; and since this lowest level is meant by the grating it was placed all the way round the altar. Such sensory perception was represented by the grating because it first sifts so to speak and sorts out those things which enter the human mind and present themselves to the understanding and will, namely truths and forms of good. If the sensory perception is composed of good it does not let anything through other than forms of good, and truths derived from good, and rejects evils and the falsities arising from evil. For sensory perception is the actual ability to perceive things which belong to the understanding and to sense those which belong to the will as they exist on outermost levels, an ability that is perfectly fashioned for the affections for those things. The nature of all this may be illustrated by very many things in the body. Everywhere in the outermost parts within the body there are forms that resemble nets and there are so to speak gratings which sort out the things that flow towards them from the world. Those that are suitable are let through because they are desirable, and those that are unsuitable are rejected because they are loathsome. Extremely sensitive systems such as these exist in the stomach. These let through into the blood the suitable juices of the chyle, because these juices are useful and therefore desirable, and reject the unsuitable because they are harmful and therefore loathsome. The situation is similar with sensory perception, which is the last and lowest level of a person's life. But this level with a person has become totally wrecked, the reason why being that it stands right next to and is exposed to the world and is therefore the last to be regenerated, indeed scarcely anyone at the present day is able to be regenerated down to that level. As regards what the level of sensory perception is like with these people, see what has been shown already concerning it in 4009, 5077, 5081, 5084, 5094, 5125, 5128, 5580, 5767, 5774, 6183, 6201, 6310-6318, 6564, 6598, 6612, 6614, 6622, 6624, 6844, 6845, 6948, 6949, 7442, 7645, 7693, 9212, 9216.

Therefore if a person is to see and have an understanding of the truths of faith and the forms of the good of love he must be raised by the Lord above that level to more internal levels. But the sensory perception meant by 'the grating, the network' around the altar is the sensory perception belonging to the Lord's Divine Human, since the altar is representative of the Lord and of the worship of Him that springs from the good of love, 9714.

6844. Take off your shoes from upon your feet' means that the powers of the senses, which form the external levels of the natural, should be removed. This is clear from the meaning of 'shoes' as the powers of the senses forming the external levels of the natural, dealt with in 1748; and from the meaning of 'feet' as the natural, dealt with in 2162, 3147, 3761, 3986, 4280, 4938-4952. 'Taking off' plainly means removing since one is talking about the powers of the senses. Particular expressions have to be used in application to the actual matter to which they refer; thus 'being taken off' is applied to shoes, and 'being removed' to the powers of the senses. The implications of all this need to be stated. Anyone can see that here 'shoes' represent something that does not accord with Him who is holy and Divine, so that 'taking off one's shoes' was representative of the removal of things like that. Without this representation what would it matter to the Divine whether a person drew near in shoes or in bare feet, provided that inwardly he is the kind of person who can draw near the Divine in faith and love? Therefore the powers of the senses are meant by 'shoes', and those powers, which form the external levels of the natural, are by nature such that they cannot remain when one thinks with reverence about the Divine. Consequently because it was a time when representatives had to be observed, Moses was not allowed to draw near with his shoes on.

[2] The reason why the powers of the senses that form the external levels of the natural are by nature such that they cannot receive the Divine is that they are steeped in ideas of worldly, bodily, and also earthly things because they are the first to receive them. Therefore sensory impressions contained in the memory as a result of the activity of the senses draw their nature from the light and heat of the world, and hardly at all from the light and heat of heaven. As a consequence they are the last things that can be regenerated, that is, receive something of the light of heaven. This explains why, when a person is ruled by his senses and sensory impressions control his thinking, he inevitably thinks of the Divine as he does of earthly things. If also he is ruled by evil those impressions make him think in ways altogether contrary to the Divine. When therefore a person thinks about the kinds of things that have to do with faith and love to God he is raised, if he is governed by good, from the powers of the senses which form the external levels of the natural to more internal levels, consequently from earthly and worldly things nearer to celestial and spiritual ones.

[3] This is something people do not know about, the reason being that they do not know that internal levels distinct and separate from external ones are present within them, or that thought exists on increasingly internal levels as well as on more external ones. And unaware of these things a person cannot reflect on them. But see what has been stated already about thought ruled by sensory impressions:

People whose thought is ruled by sensory impressions have little wisdom, 5084, 5089, 5094, 6201, 6310-6312, 6314, 6316, 6318, 6598, 6612, 6614, 6622, 6624.

A person may be raised above the level of the senses, and when he is raised he comes into a quite gentle light; and this happens especially to those who are being regenerated, 6183, 6313, 6315.

All this now shows what is meant by 'taking off one's shoes from upon one's feet'. A person's natural divides into the external, the middle, and the internal, see 4570, 5118, 5126, 5497, 5649. The internal natural is meant by 'the feet', the middle natural by 'the soles', and the external by 'the shoes'.