6949. 'And it was made into a serpent' means the sensory and bodily level of a person's mind separated from the internal. This is clear from the meaning of 'a serpent' as a person who engages in reasoning based on sensory evidence, dealt with in 195-197, 6398, 6399, thus the sensory level of a person's mind. And since 'a serpent' means the sensory level it means the bodily also, for the sensory level acquires its perceptions from the bodily senses. And since the sensory level regarded in itself is such as is described immediately above in 6948, 'a serpent', which is the sensory level, also means all evil in general, 251, 254, 257. The use of 'a serpent' here to mean the sensory and bodily level of a person's mind separated from the internal or rational level is evident from the fact that Moses fled from before it, meaning a feeling of horror caused by it, as well as from the fact that this sign describes the state of those who belonged to the spiritual Church if they were not in possession of faith; for in that case their internal would be closed and no more of the light of heaven would flow in than would be sufficient to enable them to think on that separated sensory level and therefore speak on that level. This level, separated [from the internal], is the one on which all people think who defend falsities in opposition to truths, and evils in opposition to forms of good, in short all who in life pursue what is evil and who are consequently devoid of any faith since those who lead an evil life have no belief at all. People like this have greater ability than others to engage in reasoning and to convince others, especially the simple, because when they speak they draw on the illusions of the senses and worldly appearances. They also know how to demolish truths or hide them from view by means of illusions, on account of which cunning and deceitfulness are also meant by 'serpents'. When however the sensory level has become joined to the internal or has been made properly subordinate to the rational, 'a serpent' means shrewdness and circumspection, 197, 4111, 6398.

257. 'The head of the serpent' is used to mean the reign of evil in general and of self-love in particular. This becomes clear from its very nature, which seeks not merely to exercise dominion but also to exercise it over everything on earth. Yet it is not satisfied even with that, but seeks to rule over everything in heaven. Nor is it satisfied even then, but seeks to rule over the Lord. And even then it would not be content. This inclination lies concealed within every spark of self-love. If it were shown the slightest approval and the restraint on it were slackened, you would perceive it break out instantly and strive increasingly to achieve that end. From this it is clear how 'the serpent' or evil constituting self-love wishes to have dominion, and how it hates the person it is unable to dominate. This is 'the serpent's head' which rears itself and which the Lord treads on, right down to the ground so that it goes on its belly and eats dust, as described in the previous verse. The serpent or dragon called Lucifer is similarly described in Isaiah,

Lucifer, you said in your heart, I will go up the heavens, above the stars of God I will raise my throne, and I will sit on the mount of assembly, in the uttermost parts of the north. I will go up above the heights of the clouds, I will make myself equal to the Most High. But you will indeed be cast down to hell, to the sides of the pit. Isaiah 14:13-15.

The serpent or dragon is also described in Revelation,

A great fiery-red dragon having seven heads and ten horns, and on his heads many jewels; but he was cast down to the earth. Revelation 12:3, 9.

This describes the height to which it raises its head. In David,

Jehovah said to my Lord, Sit at My right hand until I make Your enemies as Your foot-stool; Jehovah will send the rod of Your strength from Zion. He will judge the nations, He will fill them with corpses. He has crushed their head over much land. He will drink from the stream by the way, therefore He will lift up his head. Psalms 110:1-2, 6-7.