Jezekiel 40:17

17 And he brought me into the inner court, and, behold, chambers, and peristyles round about the court; thirty chambers within the ranges of columns.

Jezekiel 40:17 In-Context

15 And the open space of the gate without to the open space of the porch of the gate within was fifty cubits.
16 And secret windows to the chambers, and to the porches within the gate of the court round about, and in the same manner windows to the porches round about within: and on the porch palm-trees on this side and on that side.
17 And he brought me into the inner court, and, behold, chambers, and peristyles round about the court; thirty chambers within the ranges of columns.
18 And the porticos were behind the gates; according to the length of the gates, was the lower peristyle.
19 And he measured the breadth of the court, from the open space of the outer gate inwards to the open space of the gate looking outwards: a hundred cubits of the gate looking eastward: and he brought me to the north;

The Brenton translation of the Septuagint is in the public domain.