Ezekiel 42:15-20 - Outside Dimensions Of The Temple Complex
15 And he finished measuring the inner house; he brought me out the way of the gate whose view is eastward, and measured all around.
16 He measured the east side with the measuring reed, five hundred reeds with the measuring reed, all around. 17 He measured the north side, five hundred reeds with the measuring reed all around. 18 He measured the south side, five hundred reeds with the measuring reed. 19 He turned to the west side, measuring five hundred reeds with the measuring reed.
20 He measured it by the four sides. It had a wall all around, five hundred long, and five hundred wide, to make a separation between the holy place and the common place.