251. The reason why the “serpent” means all evil in general, and specifically the love of self, is that all evil has had its rise from that sensuous part of the mind, and also from that memory-knowledge [scientifico], which at first were signified by the “serpent;” and therefore it here denotes evil of every kind, and specifically the love of self, or hatred against the neighbor and the Lord, which is the same thing. As this evil or hatred was various, consisting of numerous genera and still more numerous species, it is described in the Word by various kinds of serpents, as “snakes” “cockatrices” “asps” “adders” “fiery serpents” “serpents that fly” and “that creep” and “vipers” according to the differences of the poison, which is hatred. Thus we read in Isaiah:

Rejoice not thou, whole Philistia, because the rod which smiteth thee is broken, for out of the serpent’s root shall go forth a cockatrice, and his fruit shall be a flying fire-serpent (Isaiah 14:29).The “serpent’s root” denotes that part of the mind, or that principle, which is connected with the senses and with memory-knowledge [est sensuale et scientificum]; the “cockatrice” denotes evil originating in the falsity thence derived; and the “flying fire-serpent” the cupidity that comes from the love of self. By the same Prophet also similar things are elsewhere thus described:

They hatch cockatrice’s eggs, and weave the spider’s web; he that eateth of their eggs dieth, and when it is crushed there cometh out a viper (Isaiah 59:5).

The serpent described here in Genesis is called in the Revelation the “great and red dragon” and the “old serpent” and also the “devil and satan” that “deceives the whole world” (Revelation 12:3, 9; 20:2), where, and also in other places, by the “devil” is not meant any particular devil who is prince over the others, but the whole crew of evil spirits, and evil itself.

7089. 'And afterwards Moses and Aaron came' means the Divine Law and the teachings derived from it. This is clear from the representation of 'Moses' as the Lord in respect of the Divine Law, dealt with in 6752; and from the representation of 'Aaron' as teachings that present what is good and true, dealt with in 6998. The expression 'Divine Law', which Moses represents, is used to mean the Word as it is in its internal sense, thus as it is in heaven, whereas the expression 'teaching' is used to mean the Word as it is in its literal sense, thus as it is on earth. How great the difference is may be recognized from the explanations given so far that have regard to the internal sense of the Word. Let the Ten Commandments, which specifically are called the Law, be used to illustrate the point. The literal meaning of them is that one should honour one's parents, not kill, commit adultery, or steal, and so on. But the internal sense is that one should worship the Lord, not harbour hatred, falsify what is true, or claim for oneself what is the Lord's. These are the ways in which those four commandments are understood in heaven, and the rest too in their own manner. For in heaven they know no other Father than the Lord; therefore instead of honouring parents they take the commandment to mean that the Lord should be worshipped. In heaven they do not know what it is to kill, for they live for ever; but instead of killing they understand harbouring hatred and harming another person's spiritual life. Nor in heaven do they know what it is to commit adultery; consequently they perceive instead what corresponds to that prohibition - being forbidden to falsify what is true. And instead of stealing they take the prohibition to mean that one should not take away from the Lord anything such as goodness and truth and claim it as one's own.

[2] This is what the Law and also the whole of the Word is like in heaven, and so what it is like in its internal sense. Indeed it is far more profound, for most of what they think and say in heaven cannot find expression in the words of human speech, because they are in the spiritual world, not the natural world, and things belonging to the spiritual world are as greatly superior to those belonging to the natural world as non-material things are to material. Yet because material things nevertheless correspond to them, material things can be used to disclose them. That is, natural speech can be used but not spiritual, for spiritual speech does not consist of material words but of spiritual words. And spiritual words consist of ideas that are converted into words in the spiritual atmosphere, and are represented by variegations of heavenly light, heavenly light being in itself nothing other than Divine intelligence and wisdom radiating from the Lord. All this shows what is meant by the Divine Law in its genuine sense, which 'Moses' represents, and what is meant by teaching, which 'Aaron' represents.