EZK 40:17

17 And he led me out to the outermore foreyard, and lo! treasuries, and (a) pavement arrayed with stone in the foreyard by compass; thirty treasuries (were) in the compass of the pavement; (And he led me out to the outer courtyard, and behold! chambers, (or rooms), and a pavement arrayed with stone all around the courtyard; and there were thirty rooms all around the pavement;)