'Watchers' in the Bible

and the watchers see a man coming out from the city, and say to him, 'Shew us, we pray thee, the entrance of the city, and we have done with thee kindness.'

and the sons of Israel do covertly things that are not right against Jehovah their God, and build for them high places in all their cities, from a tower of the watchers unto the fenced city,

he hath smitten the Philistines unto Gaza, and its borders, from a tower of watchers unto the fenced city.

Unto the walls of Babylon lift up an ensign, Strengthen the watch, Establish the watchers, prepare the ambush, For Jehovah hath both devised and done that which He spake, Concerning the inhabitants of Babylon.