Verse 20. - The fifth, sardonyx. A variety of agate - a kind of onyx, valued for its use in engraving into cameos. The name onyx appears to be owing to the resemblance in colour to the fingernails. The sixth, sardius. Probably the modern carnelian (see on Revelation 4:3). The seventh, chrysolyte. A variety of the gem of which that called topaz (the ninth stone) is another kind. This species contained a considerable amount of yellow colour, whence the name "golden stone." It has been suggested that it is identical with the modern jacinth or amber. The eighth, beryl. A variety of emerald, of less decided green shade than the pure emerald. The ninth, a topaz. Not the modern topaz, but a variety of chrysolite (see the seventh stone, supra), of a yellowish-green colour, the latter predominating. The tenth, a chrysoprasus. The name "golden leek green" appears to point to a species of beryl, and the modern aquamarine. It is thus probably a variety of emerald, being of a yellowish pale green hue. The eleventh, a jacinth. "A red variety of zircon, which is found in square prisms, of a white, grey, red, reddish brown, yellow, or pale green colour" (Smith's 'Dictionary of the Bible'). "The sapphire of the moderns" (King). The twelfth, an amethyst. A purple stone, possibly the common amethyst.

21:9-21 God has various employments for his holy angels. Sometimes they sound the trumpet of Divine Providence, and warn a careless world; sometimes they discover things of a heavenly nature of the heirs of salvation. Those who would have clear views of heaven, must get as near to heaven as they can, on the mount of meditation and faith. The subject of the vision is the church of God in a perfect, triumphant state, shining in its lustre; glorious in relation to Christ; which shows that the happiness of heaven consists in intercourse with God, and in conformity to him. The change of emblems from a bride to a city, shows that we are only to take general ideas from this description. The wall is for security. Heaven is a safe state; those who are there, are separated and secured from all evils and enemies. This city is vast; here is room for all the people of God. The foundation of the wall; the promise and power of God, and the purchase of Christ, are the strong foundations of the safety and happiness of the church. These foundations are set forth by twelve sorts of precious stones, denoting the variety and excellence of the doctrines of the gospel, or of the graces of the Holy Spirit, or the personal excellences of the Lord Jesus Christ. Heaven has gates; there is a free admission to all that are sanctified; they shall not find themselves shut out. These gates were all of pearls. Christ is the Pearl of great price, and he is our Way to God. The street of the city was pure gold, like transparent glass. The saints in heaven tread gold under foot. The saints are there at rest, yet it is not a state of sleep and idleness; they have communion, not only with God, but with one another. All these glories but faintly represent heaven.The fifth, sardonyx,.... Which is partly of the sardian, and partly of the onyx stone, which resembles a man's nail, from whence it has its name; it is reddish, bordering on white; it may be thought to answer to the onyx in the breastplate, on which was written the name of Joseph.

The sixth, sardius; the same with the sardine stone, Revelation 4:3 of a blood colour, and what is commonly called a cornelian: it is found in Sardinia, from whence it has its name, and in Bohemia and Silesia, though those of Babylon are the best. This was Reuben's stone.

The seventh, chrysolite; a stone of a dusky green colour, with a cast of yellow; by its name it should have the colour of gold. Schroder says it is found in Bohemia, and that it is the same the moderns call the topaz. Some think it answers to "tarshish" in the breastplate, rendered "beryl", on which was the name of Asher.

The eighth, beryl; a stone of a pale green colour, thought to be the diamond of the ancients: it may answer to the "ligure" in the breastplate, which the Targum on Sol 5:14 calls "birla", and had the name of Dan on it.

The ninth, a topaz; a stone very hard and transparent, of a beautiful yellow, or gold colour: the topaz of Ethiopia was counted the best, Job 28:19. Some say it is so called from the island "Topazus"; on this stone Simeon's name was engraven.

The tenth, a chrysoprasus; a stone of a green colour, inclining to that of gold, from whence it has its name; for this is the agate in the breastplate, which was Napthali's stone.

The eleventh, a jacinth; or "hyacinth": a stone of a purple, or violet colour, from whence it has its name; though what the moderns so call is of a deep reddish yellow, pretty near a flame colour. Zabulon's stone was the diamond.

The twelfth, an amethyst; a stone of a violet colour, bordering on purple: it has been thought a preservative from drunkenness, from whence it seems to have its name. On this stone was written the name of Gad. Agreeably to this account of John's, the Jews speak (n) of the tabernacle above being built on twelve precious stones; and sometimes they say (o), that the holy blessed God will found Jerusalem with ten kind of precious stones, and which they mention, and several of which are the same with these.

(n) Zohar in Gen. fol. 17. 2. & in Exod. fol. 65. 4. (o) Abkath Rocel, p. 150. Vid. Zohar in Exod. fol. 96. 3.