3707. 'And your seed will be as the dust of the earth' means that Divine natural Truth would be as natural good. This is clear from the meaning of 'seed' as truth, dealt with immediately above in 3706, 'your seed' - that is, Jacob's - consequently meaning Divine natural Truth, for as shown above 'Jacob' represents the Lord's Divine Natural; and from the meaning of 'the dust of the earth' as good, dealt with in 1610. Consequently 'your seed will be as the dust of the earth' means in the internal sense that Divine natural Truth will be as Divine natural Good. The reason 'the dust of the earths means good is that 'the earth' means the Lord's kingdom and accordingly good, as shown just above in 3705. 'The dust of the earth' therefore means good, though natural good since the earth, as also shown in that place, means that which is lower in the Lord's kingdom, thus the natural, while heaven when mentioned as well means that which is interior, or the rational. This is why the fruitfulness of good and the multiplication of truth are described in various places by means of expressions stating that someone's seed will be as the stars of heaven and as the dust of the earth. 'The stars of heaven' in that case means rational concepts, and 'the dust of the earth' natural images, which will increase in this fashion. What is meant by natural truth becoming as natural good will in the Lord's Divine mercy be explained later on.

1866. 'From the river of Egypt to the great river, the river Phrath' means the extension of spiritual and celestial things, 'to the river of Egypt' being the extension of spiritual things, 'to the river Phrath' the extension of celestial things. This is clear from the meaning of 'the river of Egypt' and from the meaning of 'the great river' or the Euphrates. That these rivers mean the extension of spiritual and celestial things becomes clear from the meaning of 'the land of Canaan' as the Lord's kingdom in heaven and on earth, in which kingdom there is nothing else than the spiritual things of faith and the celestial things of mutual love. Consequently nothing else can be meant by the borders of the land of Canaan than the extension of those things. For what the land of Canaan is, what the river of Egypt is, and what the great river, the Euphrates, is, the inhabitants of heaven do not know at all. Indeed they do not know what the borders of any land are; but they do know what the extension of spiritual and celestial things is, and the range and limits of the states belonging to them. These are the things which those in heaven have in mind when such things in the letter are read by man, so that the letter and its historical sense which has served as a basis for heavenly ideas disappears.

[2] The reason why 'the river of Egypt' means the extension of spiritual things is that 'Egypt' means factual knowledge which, together with the rational concepts and the intellectual concepts which a person has, constitute spiritual things, as stated already in 1443 and elsewhere in this volume. And as to why in the internal sense 'Egypt' means factual knowledge, see 1164, 1165, 1186, 1462. That 'the river Euphrates' means the extension of celestial things becomes clear from the lands which that river bounded and marked off from the land of Canaan, and by which in many other places facts and the cognitions of celestial things are meant. Here however because it is called 'the river', and 'the great river', they are nothing other than celestial things and the cognitions of them, for 'the great river' and greatness are used in reference to these.