Isaiah 22:10

(10) Ye have numbered the houses of Jerusalem.—The preparations for defence are continued. The houses were numbered that some might be pulled down and others left, as strategical plans might determine. (Comp. 2 Chronicles 32:5.) So in what was probably a contemporary psalm we have, “Walk about Zion . . . tell the towers thereof . . . mark ye well her bulwarks” (Psalms 48:12). So in the later siege of Jerusalem houses were thrown down by (or, more accurately, on account of) the mounds that were employed by the besiegers (Jeremiah 33:4).