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.

9216. 'In which he may sleep' means resting on them. This is clear from the meaning of 'sleeping' as resting, in this instance on the external and sensory level, meant by 'clothing', 9212; for it says that it is clothing 'in which he may sleep'. How the explanation that more internal things find rest on the sensory level should be understood must be stated. The sensory level is the last and lowest of a person's life, as has been shown above. What is lowest contains all the more internal levels and is general to them all; for they terminate in it and accordingly rest on it. It is like the skin, for example, which is the outermost covering of the body. The body and all things in it terminate in the skin, because it contains them and they accordingly rest on the skin. In a similar way it is like the peritoneum within the body. Because it contains the abdominal organs, these rest on it and are also linked to it all round. Or equally it is like the pleura's relationship to the organs in the chest.

[2] A similar situation exists with all the things that compose a person's actual life, with those for instance that are connected with his understanding and those that are connected with his will. These too follow one another in order from more internal things to relatively external ones. The relatively external ones are factual knowledge together with its delights, while the outermost things are those of the senses, which are in contact with the world through sight, hearing, taste, smell, and touch. The more internal things rest on them since they terminate in them. These are the matters that are meant in the spiritual sense by 'the covering' or 'the clothing in which he may sleep'. The reason why things on the level of the senses are meant by 'the clothing' or 'the covering' lies in correspondences; for as stated above in 9212, spirits and angels appear dressed in garments in keeping with their truths of faith. Those governed by truths springing from good appear in shining ones, as for instance those at the Lord's tomb did, Luke 24:4; Matthew 28:3, and also in ones of fine, white linen, as for instance those referred to in Revelation 19:14 did; and others appear in garments of various colours.

[3] Furthermore it should be realized that all things without exception proceed in successive stages from their first or inmost level to their terminations on the last and lowest and rest on them. Each thing at a prior or more internal stage in order has its own connection with terminations on the lowest level. Therefore if things on the lowest level are dispelled those on interior levels are also scattered. This also explains why there are three heavens. The inmost or third heaven flows into the middle or second heaven; the middle or second heaven flows into the first or lowest heaven, which in turn flows into and resides with mankind. Consequently the human race constitutes the lowest level of order; in it heaven terminates and on it heaven rests. This being so, the Lord in His Divine [Love and Care] always provides for the presence among the human race of a Church in which truth revealed by God exists; such truth on our planet is the Word. By means of this a continuous link exists between the human race and the heavens. This is why every detail of the Word has within it an internal sense which exists for heaven's benefit and whose nature is such that it joins angels' minds to those of people on earth in so firm a bond that they act as one. All this goes to show yet again the nature of a situation in which interior things rest on those at the lowest level.