'Watchman' in the Bible

But Absalom went in flight. And the young man who kept the watch, lifting up his eyes, saw that a great band of people was coming down the slope by the way of the Horons; and the watchman came and gave word to the king, saying, I saw men coming down by the way of the Horons, from the hillside.

Now David was seated between the two town doors; and the watchman went up to the roof of the doorways, on the wall, and, lifting up his eyes, saw a man running by himself.

And the watchman gave news of it to the king. And the king said, If he is coming by himself, then he has news. And the man was travelling quickly, and came near.

Then the watchman saw another man running: and crying out in the direction of the door he said, Here is another man running by himself. And the king said, He, like the other, comes with news.

And the watchman said, It seems to me that the running of the first is like the running of Ahimaaz, the son of Zadok. And the king said, He is a good man, and his news will be good.