Revelation of John 21:18-21

Verse 18

The building of the wall of it was of jasper - The oriental jasper is exceedingly hard, and almost indestructible. Pillars made of this stone have lasted some thousands of years, and appear to have suffered scarcely any thing from the tooth of time.

Pure gold, like unto clear glass - Does not this imply that the walls were made of some beautifully bright yellow stone, very highly polished? This description has been most injudiciously applied to heaven; and in some public discourses, for the comfort and edification of the pious, we hear of heaven with its golden walls, golden pavements, gates of pearl, etc., etc., not considering that nothing of this description was ever intended to be literally understood; and that gold and jewels can have no place in the spiritual and eternal world. But do not such descriptions as these tend to keep up a fondness for gold and ornaments? In symbols they are proper; but construed into realities, they are very improper.

The ancient Jews teach that "when Jerusalem and the temple shall be built, they will be all of precious stones, and pearls, and sapphire, and with every species of jewels." - Sepher Rasiel Haggadol, fol. 24, 1.

The same authors divide paradise into seven parts or houses; the third they describe thus: "The third house is built of gold and pure silver, and all kinds of jewels and pearls. It is very spacious, and in it all kinds of the good things, either in heaven or earth, are to be found. All kinds of precious things, perfumes, and spiritual virtues, are there planted. In the midst of it is the tree of life, the height of which is five hundred years; (i.e., it is equal in height to the journey which a man might perform in five hundred years), and under it dwell Abraham, Isaac, Jacob, the twelve patriarchs, and all that came out of Egypt, and died in the wilderness. Over these Moses and Aaron preside, and teach them the law," etc. - Yalcut Rubeni, fol. 13, 4. In the same tract, fol. 182, 1, we find these words: "Know that we have a tradition, that when the Messiah, with the collected captivity, shall come to the land of Israel, in that day the dead in Israel shall rise again; and in that day the fiery walls of the city of Jerusalem shall descend from heaven, and in that day the temple shall be builded of jewels and pearls."
Verse 19

The foundations of the wall - Does not this mean the foundations or thresholds of the gates? The gates represented the twelve tribes, Rev 21:12; and these foundations or thresholds, the twelve apostles, Rev 21:14. There was no entrance into the city but through those gates, and none through the gates but over these thresholds. The whole of the Mosaic dispensation was the preparation of the Gospel system: without it the Gospel would have no original; without the Gospel, it would have no reference nor proper object. Every part of the Gospel necessarily supposes the law and the prophets. They are the gates, it is the threshold; without the Gospel no person could enter through those gates. The doctrine of Christ crucified, preached by the apostles, gives a solid foundation to stand on; and we have an entrance into the holiest by the blood of Jesus, Heb 10:19, etc. And in reference to this we are said to be built on the Foundation of the Apostles and prophets, Jesus Christ himself being the chief corner stone, Eph 2:20.

The first foundation was jasper - A stone very hard, some species of which are of a sea-green color; but it is generally a bright reddish brown.

The second, sapphire - This is a stone of a fine blue color, next in hardness to the diamond.

The third, a chalcedony - A genus of the semipellucid gems, of which there are four species: -

1. A bluish white; this is the most common sort.

2. The dull milky veined; this is of little worth.

3. The brownish black; the least beautiful of all.

4. The yellow and red; the most beautiful, as it is the most valuable of all. Hitherto this has been found only in the East Indies.

The fourth, an emerald - This is of a bright green color without any mixture, and is one of the most beautiful of all the gems, The true oriental emerald as very scarce, and said to be found only in the kingdom of Cambay.
Verse 20

The fifth, sardonyx - The onyx is an accidental variety of the agate kind; it is of a dark horny color, in which is a plate of a bluish white, and sometimes of red. When on one or both sides of the white there happens to lie also a plate of a reddish color, the jewelers call the stone a sardonyx.

The sixth, sardius - The sardius, sardel, or sardine stone, is a precious stone of a blood-red color.

The seventh, chrysolite - The gold stone. It is of a dusky green with a cast of yellow. It is a species of the topaz.

The eighth, beryl - This is a pellucid gem of a bluish green color.

The ninth, a topaz - A pale dead green, with a mixture of yellow. It is considered by the mineralogists as a variety of the sapphire.

The tenth, a chrysoprasus - A variety of the chrysolite, called by some the yellowish green and cloudy topaz. It differs from the chrysolite only in having a bluish hue.

The eleventh, a jacinth - A precious stone of a dead red color, with a mixture of yellow. It is the same as the hyacenet or cinnamon stone.

The twelfth, an amethyst - A gem generally of a purple or violet color, composed of a strong blue and deep red.

These stones are nearly the same with those on the breastplate of the high priest, Exo 28:17, etc., and probably were intended to express the meaning of the Hebrew words there used. See the notes on Exo 28:17, etc. where these gems are particularly explained.
Verse 21

The twelve gates were twelve pearls - This must be merely figurative, for it is out of all the order of nature to produce a pearl large enough to make a gate to such an immense city. But St. John may refer to some relations of this nature among his countrymen, who talk much of most prodigious pearls. I shall give an example: "When Rabbi Juchanan (John) once taught that God would provide jewels and pearls, thirty cubits every way, ten of which should exceed in height twenty cubits, and would place them in the gates of Jerusalem, according to what is said Isa 54:12, I will make thy windows of agates, and thy gates of carbuncles, one of his disciples ridiculed him, saying, Where can such be found, since at present there is none so large as a pigeon's egg? Afterwards, being at sea in a ship, he saw the ministering angels cutting gems and pearls; and he asked them for what purpose they were preparing those. They answered, to place them in the gates of Jerusalem. On his return he found Rabbi Juchanan teaching as usual; to whom he said, Explain, master, what I have seen. He answered, Thou knave, unless thou hadst seen, thou wouldst not have believed; wilt thou not receive the saying of the wise men? At that moment he fixed his eyes upon him, and he was reduced into a heap of bones." - Bava bathra, fol. 77, 1, and Sanhedrim, fol. 100, 1, page 393. Edit. Cocceii. See Schoettgen.
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