Stones in the Bible in general represent truths, or things we know concerning the Lord and what He wants from us and for us in life. This is why the people of Israel built altars of stone, and is also why stoning was a principal form of capital punishment (using truth to destroy falsity, or in the negative sense using falsity to destroy truth). It is also why precious stones are described in such detail on Aaron's breastplate and ephod, and also in the New Jerusalem in Revelation; precious stones represent true ideas directly from the Lord with the various colors showing various forms of love. Stones are not alone in representing truth, of course -- it sometimes seems that almost everything in the Bible represents either true ideas or desires for good. But that makes sense, since our thoughts and our desires together are everything we are in life, and the interplay between them is what life is all about. The many ways they are represented in the Bible reflect the incredible variety in our feelings and thoughts, though we can only distantly understand how those representations work. In the case of stones, in their weight, strength and permanence they tend to represent true ideas that come from a desire for good, the understanding we can have if we are truly good and loving -- and in the highest sense the exalted ideas that come from the Lord's love. Those ideas are ones that are not easily moved or changed, and make wonderful foundations for the things we want to build in our spiritual lives.

589. Verse 21. And repented not of their murders, signifies who have not actually turned themselves away from extinguishing the things that pertain to the understanding of truth, the will of good, and spiritual life therefrom. This is evident from the signification of "repenting," as being actually turning oneself away (as above, n. 585; and from the signification of "murders," as being the extinction of the understanding of truth, of the will of good, and of spiritual life therefrom; for "man" signifies the understanding of truth, and wisdom (See above, n. 280, 546, 547); and "to kill" signifies to extinguish spiritual life by the falsities of evil (See above, n. 315, 547, 572). That "murder or manslaughter" signifies the extinction of spiritual life can be seen without proof passages from the Word, from this, that the particulars here must be understood spiritually, and "to kill" spiritually is to extinguish spiritual life, which is done by the falsities of evil.

[2] This is why the devil is called "a murderer from the beginning" by the Lord, in John:

Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and stood not in the truth, because there is no truth in him. When he speaketh a lie he speaketh from his own, for he is a liar and the father thereof (John 8:44).

This means the Jewish nation itself, which through its idolatries and traditions extinguished spiritual life by the falsities of evil; "the father thereof" means their fathers; because they extinguished spiritual life by the falsities of evils it is said, "there is no truth in him; when he speaketh a lie, he speaketh from his own, for he is a liar, and "the father thereof," a "lie" signifying in the Word the falsity of evil.

[3] "Murders" and a "lie" have a similar signification in the following words in Revelation:

Without shall stand the dogs, and the sorcerers, and the whoremongers, and the murderers, and the idolaters, and everyone that loveth and maketh a lie (Revelation 22:15).

Because those who are meant by "Babylon" extinguish all Divine truths by the falsities of evil, Babylon is called:

An abominable shoot, a garment of those that are slain, of those thrust through with the sword; for thou hast destroyed thy land, thou hast slain thy people (Isaiah 14:19, 20).

This is said of Babylon. Those are said to be "thrust through with the sword" who have been destroyed by the falsities of evil; "to destroy the land" signifies to destroy the church; and "to slay the people" signifies to extinguish the truths of the church.