12 The city wall was broad and high, with twelve gates guarded by twelve angels. And the names of the twelve tribes of Israel were written on the gates. 13 There were three gates on each side-east, north, south, and west. 14 The wall of the city had twelve foundation stones, and on them were written the names of the twelve apostles of the Lamb. 15 The angel who talked to me held in his hand a gold measuring stick to measure the city, its gates, and its wall. 16 When he measured it, he found it was a square, as wide as it was long. In fact, its length and width and height were each 1,400Â miles. 17 Then he measured the walls and found them to be 216Â feet thick (according to the human standard used by the angel). 18 The wall was made of jasper, and the city was pure gold, as clear as glass. 19 The wall of the city was built on foundation stones inlaid with twelve precious stones: the first was jasper, the second sapphire, the third agate, the fourth emerald, 20 the fifth onyx, the sixth carnelian, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, the twelfth amethyst.
Matthew Henry's Commentary on Revelation 21:12-20
Commentary on Revelation 21:9-21
(Read Revelation 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.