11. Ye made . . . a ditch--rather, "Ye shall make a reservoir" for receiving the water. Hezekiah surrounded Siloah, from which the old (or king's, or upper) pool took its rise, with a wall joined to the wall of Zion on both sides; between these two walls he made a new pool, into which he directed the waters of the former, thus cutting off the foe from his supply of water also. The opening from which the upper pool received its water was nearer Zion than the other from which the lower pool took its rise, so that the water which flowed from the former could easily be shut in by a wall, whereas that which flowed from the latter could only be brought in by subterranean conduits (compare see on Isa 22:9; Isa 7:3; 2Ki 20:20; 2Ch 32:3-5, 30; Ecclesiasticus 48:17). Both were southwest of Jerusalem.
      have not looked . . . neither had respect--answering by contrast to "Thou didst look to the armor, ye have seen ('had respect', or 'regard to') the breaches" (Isa 22:8, 9).
      maker thereof--God, by whose command and aid these defenses were made, and who gave this fountain "long ago." G. V. SMITH translates, "Him who doeth it," that is, has brought this danger on you--"Him who hath prepared it from afar," that is, planned it even from a distant time.

JFB.