'Upper chambers' in the Bible
And David gave to Solomon his son the pattern of the porch, and of its houses, and of its treasuries, and of its upper chambers, and of its inner chambers, and of the house of the mercy-seat;
And the weight of the nails was fifty shekels of gold. And he covered the upper chambers with gold.
Who is laying the beam of His upper chambers in the waters, Who is making thick clouds His chariot, Who is walking on wings of wind,
He watereth the mountains from his upper-chambers: the earth is satisfied with the fruit of thy works.
“Woe (judgment is coming) to him who builds his house by [acts of] unrighteousnessAnd his upper chambers by injustice,Who uses his neighbor’s service without payAnd does not give him wages [for his work],
that saith, I will build me a wide house, and spacious upper chambers; and he cutteth out for himself windows; and it is wainscoted with cedar, and painted with vermilion.
The upper chambers were narrower, since the galleries required more space than did the lower and middle portions of the building.
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.
And Daniel as soon as he knew that the writing was signed, went up into his house; and the windows being opened to him in his upper chambers before Jerusalem, three times in the day he kneeled upon his knees, and praying and praising before his God, for the cause that he did from before this