John Gill Commentary Ezekiel 40:21

"And the lodges thereof were three on this side and three on that side; and the posts thereof and the arches thereof were after the measure of the first gate: the length thereof was fifty cubits, and the breadth five and twenty cubits." — Ezekiel 40:21 (ASV)

And the little chambers thereof were three on this side, and three on that side As in the eastern gate, and the measures the same, (Ezekiel 40:7) . Gospel churches in the latter day will be all on the same plan, and modelled according to the same pattern, and be in just the same order, one as another: and the posts thereof, and the arches thereof, were after the same measure of the first gate ; the eastern gate: believers will be all pillars in the church of God, and partakers of the same like precious faith: the length thereof was fifty cubits, and the breadth five and twenty cubits ; see (Ezekiel 40:13Ezekiel 40:15) .