Ezekiel 42:15-20

15And when he had made an end of measuring the inner house, he brought me forth toward the gate whose front was toward the east, and measured [the enclosure] round about. 16He measured the east side with the measuring-reed, five hundred reeds, with the measuring-reed round about. 17He measured the north side, five hundred reeds, with the measuring-reed round about. 18He measured the south side, five hundred reeds, with the measuring-reed. 19He turned about to the west side, [and] measured five hundred reeds with the measuring-reed. 20He measured it on the four sides; it had a wall round about, five hundred long, and five hundred broad, to make a separation between that which was holy and that which was common.