Serpents represent what we know from our bodily senses, and the reasoning based on our senses. Since the people of the Most Ancient Church had become more external, they were susceptible to the lure of trusting their senses more than they trusted the leading of the Lord. That was particularly true for the sense of self the people had been given, which is represented by the woman. Eating of the trees in the garden represented taking in desires for good and true ideas from the knowledge granted them by the Lord.

So here, for the first time, we see people, from their own senses, actually questioning the Lord. From their senses they wished to explore the knowledge represented by fruit of the garden, but wondered why they were denied the tree of knowledge.

(Odkazy: Arcana Coelestia 194, 195, 196, 197)

1710. 'And pursued as far as Dan' means a state of purification. This is clear from the train of thought in the internal sense. 'Pursuing enemies' here means casting out the evils and falsities which were present with goods and truths and which caused these to be no more than goods and truths in outward appearance, and thus it means liberating them and purifying them. 'As far as Dan' means to Canaan's furthest boundary, and so to the outer limits to which they had fled. That Dan means the furthest boundaries or outer limits of Canaan is clear from various parts of the Word, as in Samuel,

To translate the kingdom from the house of Saul and to set up the throne of David over Israel and over Judah. from Dan even to Beersheba. 2 Samuel 3:10.

In the same book,

The whole of Israel from Dan even to Beersheba will be assembled together. 2 Samuel 17:10.

In the same book,

David said to Joab, Go through all the tribes of Israel from Dan even to Beersheba. 2 Samuel 24:2, 15.

In the Book of Kings,

Judah and Israel dwelt safely, every one under his vine and under his fig tree, from Dan even to Beersheba. 1 Kings 4:25.

From these quotations it is evident that Dan was the furthest boundary of Canaan, in which direction the enemies were pursued that were infesting the goods and truths of the External Man. But because Dan was a boundary of Canaan, and so inside Canaan, they were driven still further away so that they should not remain there - namely to 'Hobah on the left of Damascus', as is clear from the verse that comes next - and in this way purification was accomplished. As stated already, 'the land of Canaan' means in a holy sense the Lord's kingdom, and thus the celestial element of love, or the good of love, chiefly the good residing in the Lord.