He measured the east side with the measuring reed, five hundred reeds, with the measuring reed round about.

King James Translators' Notes

side: Heb. wind

Jamieson-Fausset-Brown Bible Commentary

16. five hundred reeds-the Septuagint substitutes "cubits" for "reeds," to escape the immense compass assigned to the whole, namely, a square of five hundred rods or three thousand cubits (two feet each; Eze 40:5), in all a square of one and one-seventh miles, that is, more than all ancient Jerusalem; also, there is much space thus left unappropriated. Fairbairn rightly supports English Version, which agrees with the Hebrew. The vast extent is another feature marking the ideal character of the temple. It symbolizes the great enlargement of the kingdom of God, when Jehovah-Messiah shall reign at Jerusalem, and from thence to the ends of the earth (Isa 2:2-4; Jer 3:17; Ro 11:12, 15).

Matthew Henry's Concise Commentary

42:1-20 In this chapter are described the priests' chambers, their use, and the dimensions of the holy mount on which the temple stood. These chambers were many. Jesus said, In my Father's house are many mansions: in his house on earth there are many; multitudes, by faith, are lodging in his sanctuary, and yet there is room. These chambers, though private, were near the temple. Our religious services in our chambers, must prepare for public devotions, and further us in improving them, as our opportunities are.

Matthew Henry's Whole Bible Commentary

Verses 15-20

We have attended the measuring of this mystical temple and are now to see how far the holy ground on which we tread extends; and that also is here measured, and found to take in a great compass. Observe, 1. What the dimensions of it were. It extended each way 500 reeds (v. 16-19), each reed above three yards and a half, so that it reached every way about an English measured mile, which, the ground lying square, was above four miles round. Thus large were the suburbs (as I may call them) of this mystical temple, signifying the great extent of the church in gospel-times, when all nations should be discipled and the kingdoms of the world made Christ's kingdoms. Room should be made in God's courts for the numerous forces of the Gentiles that shall flow into them, as was foretold, Isa. 49:18; 60:4. It is in part fulfilled already in the accession of the Gentiles to the church; and we trust it shall have a more full accomplishment when the fulness of the Gentiles shall come in and all Israel shall be saved. 2. Why the dimensions of it were made thus large. It was to make a separation, by putting a very large distance between the sanctuary and the profane place; and therefore there was a wall surrounding it, to keep off those that were unclean and to separate between the previous and the vile. Note, A difference is to be put between common and sacred things, between God's name and other names, between his day and other days, his book and other books, his institutions and other observances; and a distance is to be put between our worldly and religious actions, so as still to go about the worship of God with a solemn pause.