Cross reference
Ezekiel 42:5
5 Now the upper chambers were shorter; for the galleries took away from these, more than from the lower and the middle, in the building.
Ezekiel 41:7
7 The side-chambers were broader as they encompassed [the house] higher and higher; for the encompassing of the house went higher and higher round about the house: therefore the breadth of the house [continued] upward; and so one went up [from] the lowest [chamber] to the highest by the middle [chamber].