8940. 'And if you make for Me an altar of stones' means a representative kind of worship in general that is composed of truths. This is clear from the meaning of 'an altar' as a representative of Divine worship in general, dealt with in 921, 2777, 2811, 4489; and from the meaning of 'stones' as truths, dealt with in 643, 1298, 3720, 3769, 3771, 3773, 3789, 3798, 6426, 8609. There is worship of the Lord that springs from good, and there is worship of Him that springs from truth. Worship of the Lord springing from good was represented by an altar of soil, and worship springing from truth by an altar of stone. Regarding the first and the second kinds of worship, see above in 8935. It was because an altar of stone was a sign of worship springing from truth that they were commanded to set up such an altar as soon as they crossed the Jordan and came into the land of Canaan, and to write on it the Commandments contained in the Law, that is, God's truths from heaven. For by the Ten Commandments are meant all God's truths in summary form. That altar is spoken of in Moses as follows,

When you cross the Jordan you shall set up for yourself large stones, and coat them with lime. Then you shall write on them all the words of the Law. Afterwards, you shall build there an altar to Jehovah your God, an altar of stones, which you shall not hew with any iron tool. ¹ With whole stones you shall build the altar of Jehovah your God, and present ² on it burnt offerings and eucharistic offerings. And you shall write on the stones of the altar the words of the Law, expressing them very plainly. Deuteronomy 27:1-8; Joshua 8:30-32.

[2] The reason why they were to write the words of the Law on stones of the altar was that truths were meant by 'stones', and worship that springs from truths by 'an altar of stones'. This was also the reason why the Ten Commandments, which were a sign of Divine Truths in their entirety, were inscribed on tablets of stone. The reason why it had to be done as soon as they crossed the Jordan was that the Jordan, which was the first and outermost boundary of the land of Canaan on the side where the wilderness lay, meant introduction into the Church or heaven, which is accomplished through cognitions or knowledge of truth and good, thus through truths from the Word, 4255. For all the rivers serving as boundaries of that land meant the first and outermost reaches of the Lord's kingdom, 4116, 4240. By 'the stones of the altar' the truths of faith are also meant in Isaiah,

He will remove sin when He makes all the stones of the altar like chalk-stones scattered about. Isaiah 27:9

This refers to the ruination of the Church. 'The stones of the altar like chalk-stones scattered about' stands for the truths of faith that inspire worship after something similar has happened to them. As regards altars in general, they were made out of soil, stones, bronze, wood, and also gold - out of bronze, wood, and gold because these materials served to mean good. For an altar of bronze, see Ezekiel 9:2; for an altar of wood, Ezekiel 41:22; and for an altar of gold, which was the altar of incense, 1 Kings 6:22; 7:48; Revelation 8:3. That 'bronze' means good, see 425, 1551; that 'wood' does so, 643, 2784, 2812, 3720, 8354; and that 'gold' does so as well, 113, 1551, 1552, 5658.

Footnotes:

471. The reason why they dwelt in this manner - that is to say, quite separately and divided solely into houses, families, and nations - was so that the Church might in this way be preserved intact, and so that every house and family might be dependent on their parent, and that love and true worship might consequently continue among them. And over and above this each house had distinctive traits that made it different from any other. For it is well known that children, and even later descendants, derive from their parents particular traits and such known characteristics as can be detected in the face and in many other ways. Therefore to guard against any intermingling of innate dispositions, and to preserve their precise differences, it pleased the Lord that they dwell in this manner. In this way the Church was a living representative of the Lord's kingdom, for the Lord's kingdom includes countless communities, with each one differing from every other according to differences of love and faith. This, as stated already, is 'living alone' and, as also stated, 'living in tents'. For the same reason it pleased the Lord to have the Jewish Church to do the same, that is, to be divided into houses, families, and nations, with each individual contracting a marriage inside his own family. These matters will in the Lord's Divine mercy be dealt with later on.