{13} And he that talked with me had a golden reed to measure the city, and the gates thereof, and the wall thereof.

(13) A transition to a more exquisite description of the parts of the Church, by finding out its size, by the angel that measured them.

People's New Testament

21:15 And he... had a golden reed to measure the city. The reed is a divine measure and the city is to correspond to the measure. The church is measured with a reed in Re 11:1. Both the earthly and the heavenly church must agree with the divine plan.

Wesley's Notes

21:15 And he measured the city, twelve thousand furlongs - Not in circumference, but on each of the four sides. Jerusalem was thirtythree furlongs in circumference; Alexandria thirty in length, ten in breadth. Nineveh is reported to have been four hundred furlongs round; Babylon four hundred and eighty. But what inconsiderable villages were all these compared to the new Jerusalem! By this measure is understood the greatness of the city, with the exact order and just proportion of every part of it; to show, figuratively, that this city was prepared for a great number of inhabitants, how small soever the number of real Christians may sometimes appear to be; and that everything relating to the happiness of that state was prepared with the greatest order and exactness. The city is twelve thousand furlongs high; the wall, an hundred and forty - four reeds. This is exactly the same height, only expressed in a different manner. The twelve thousand furlongs, being spoken absolutely, without any explanation, are common, human furlongs: the hundred forty - four reeds are not of common human length, but of angelic, abundantly larger than human. It is said, the measure of a man that is, of an angel because St. John saw the measuring angel in an human shape. The reed therefore was as great as was the stature of that human form in which the angel appeared. In treating of all these things a deep reverence is necessary; and so is a measure of spiritual wisdom; that we may neither understand them too literally and grossly, nor go too far from the natural force of the words. The gold, the pearls, the precious stones, the walls, foundations, gates, are undoubtedly figurative expressions; seeing the city itself is in glory, and the inhabitants of it have spiritual bodies: yet these spiritual bodies are also real bodies, and the city is an abode distinct from its inhabitants, and proportioned to them who take up a finite and a determinate space. The measures, therefore, above mentioned are real and determinate.

Jamieson-Fausset-Brown Bible Commentary

15. had a golden reed-so Coptic. But A, B, Vulgate, and Syriac read, "had (as) a measure, a golden reed." In Re 11:2 the non-measuring of the outer courts of the temple implied its being given up to secular and heathen desecration. So here, on the contrary, the city being measured implies the entire consecration of every part, all things being brought up to the most exact standard of God's holy requirements, and also God's accurate guardianship henceforth of even the most minute parts of His holy city from all evil.

Matthew Henry's Concise Commentary

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.