'Height' in the Bible

Be mindful, therefore, of the height from which you have fallen. Repent at once, and act as you did at first, or else I will surely come and remove your lampstand out of its place--unless you repent.

The plan of the city is a square, the length being the same as the breadth; and he measured the city furlong by furlong, with his measuring rod--it is twelve hundred miles long, and the length and the breadth and the height of it are equal.