Verses with the word stairs in the Old Testament (8 verses):

1 Kings 6:8
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.

2 Kings 9:13
Then they hasted, and took every man his garment, and put it under him on the top of the stairs, and blew with trumpets, saying, Jehu is king.

Nehemiah 3:15
But the gate of the fountain repaired Shallun the son of Colhozeh, the ruler of part of Mizpah; he built it, and covered it, and set up the doors thereof, the locks thereof, and the bars thereof, and the wall of the pool of Siloah by the king's garden, and unto the stairs that go down from the city of David.

Nehemiah 9:4
Then stood up upon the stairs, of the Levites, Jeshua, and Bani, Kadmiel, Shebaniah, Bunni, Sherebiah, Bani, and Chenani, and cried with a loud voice unto the LORD their God.

Nehemiah 12:37
And at the fountain gate, which was over against them, they went up by the stairs of the city of David, at the going up of the wall, above the house of David, even unto the water gate eastward.

Canticles 2:14
O my dove, that art in the clefts of the rock, in the secret places of the stairs, let me see thy countenance, let me hear thy voice; for sweet is thy voice, and thy countenance is comely.

Ezekiel 40:6
Then came he unto the gate which looketh toward the east, and went up the stairs thereof, and measured the threshold of the gate, which was one reed broad; and the other threshold of the gate, which was one reed broad.

Ezekiel 43:17
And the settle shall be fourteen cubits long and fourteen broad in the four squares thereof; and the border about it shall be half a cubit; and the bottom thereof shall be a cubit about; and his stairs shall look toward the east.