OT.filter - nkjv watchtower:

nkjv@2Kings:17:9 @ Also the children of Israel secretly did against the LORD their God things that were not right, and they built for themselves high places in all their cities, from watchtower to fortified city.

nkjv@2Kings:18:8 @ He subdued the Philistines, as far as Gaza and its territory, from watchtower to fortified city.

nkjv@Isaiah:21:8 @ Then he cried, "A lion, my Lord! I stand continually on the watchtower in the daytime; I have sat at my post every night.