1 Kings 6:8
A passageway to the side chamber was constructed on the south side of the Temple by which people could ascend winding stairs to the middle story, then from there to the third story.
Ezekiel 41:6-7
The side chambers consisted of three stories, each above the other, with 30 chambers in each story. The side chambers extended out from the wall that faced the inside of the chambers where the chambers were fastened together, but the chamber walls were not fastened directly into the Temple walls themselves.
Treasury of Scripture Knowledge
Summary
The door for the middle chamber was in the right side of the house: and they went up with winding stairs into the middle chamber, and out of the middle into the third.
Went up
General references
Bible References
Went up
Ezekiel 41:6
The side chambers consisted of three stories, each above the other, with 30 chambers in each story. The side chambers extended out from the wall that faced the inside of the chambers where the chambers were fastened together, but the chamber walls were not fastened directly into the Temple walls themselves.
General references
Ezekiel 40:7
Each guardhouse measured one reed long and one reed wide, and the distance between each guardhouse was five cubits. The threshold of the gate near the vestibule facing away from the Temple entrance measured one reed.
Ezekiel 42:6
The three part structure had no columns, unlike the courts, which is why the upper chambers were offset from the ground upward, more so than the lower and middle chambers.