'Lowest' in the Bible

The entrance to the lowest side chamber was on the right [or south] side of the house; and they would go up winding stairs to the middle [level], and from the middle to the third.

You have laid me in the lowest pit,In dark places, in the depths.

Therefore the Lord cuts off head and tail [the highest and the lowest] from Israel,Both [the high] palm branch and [the low] bulrush in one day.

The side chambers became wider at each successive level as they encompassed the temple. Because the structure surrounding the temple went higher by stages on all sides of the temple, for that reason the width of the temple increased as it went higher; and thus one went up from the lowest story to the highest one by way of the second story.