Commentaire sur Ézéchiel 41:7

And it became wider And the cells constantly widened as they went upward, as I explained: the middle one was a cubit wider than the lowest one, and the uppermost [one] was a cubit [wider] than the middle one.

and it wound higher and higher [Heb. וְנָסְבָה,] and it was surrounded by a spiral staircase, fiz in Old French. This is a stone structure similar to a pillar, with steps winding around it. It seems to the person who is ascending upon it that he is encircling a stone pillar. In German it is called a wendelstein. This is what is [meant when it is] stated regarding Solomon’s Temple (I Kings 6:8): “and upon winding stairs (לוּלִים) they went up into the middle [chamber].” That too is translated [into Aramaic] as וּבִמְסִיבָתָא, like וְנָסְבָה לְמַעְלָה לְמַעְלָה and it wound higher and higher. The spiral staircase continued to wind higher and higher up to the roof of the uppermost cell, as he proceeds to explain, [so] that the spiral staircase ascended from the nethermost cell to the middle one and from the middle one to the uppermost one.

for the encompassing of the House to the cells.