'Watchman' in the Bible

Now the watchman was standing on the tower in Jezreel and he saw the crowd with Jehu as he approached, and said, “I see a company.” And Joram said, “Send a horseman to meet them and have him ask, ‘Do you come in peace?’”

So the horseman went to meet him and said, “Thus says the king: ‘Do you come in peace?’” And Jehu said, “What have you to do with peace? Rein in behind me.” And the watchman reported, “The messenger approached them, but he has not returned.”

And the watchman reported, “He approached them, but he has not returned; and the driving [of the chariot] is like that of Jehu the son of Nimshi, for he drives furiously.”