'Watchman' in the Bible

And David sat between the two gates: and the watchman went up to the roof over the gate unto the wall, and lifted up his eyes, and looked, and behold a man running alone.

And the watchman cried, and told the king. And the king said, If he be alone, there is tidings in his mouth. And he came apace, and drew near.

And the watchman saw another man running: and the watchman called unto the porter, and said, Behold another man running alone. And the king said, He also bringeth tidings.

And the watchman said, Me thinketh the running of the foremost is like the running of Ahimaaz the son of Zadok. And the king said, He is a good man, and cometh with good tidings.

And there stood a watchman on the tower in Jezreel, and he spied the company of Jehu as he came, and said, I see a company. And Joram said, Take an horseman, and send to meet them, and let him say, Is it peace?

So there went one on horseback to meet him, and said, Thus saith the king, Is it peace? And Jehu said, What hast thou to do with peace? turn thee behind me. And the watchman told, saying, The messenger came to them, but he cometh not again.

And the watchman told, saying, He came even unto them, and cometh not again: and the driving is like the driving of Jehu the son of Nimshi; for he driveth furiously.

{A Song of degrees for Solomon.} Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh but in vain.

For thus hath the Lord said unto me, Go, set a watchman, let him declare what he seeth.

The burden of Dumah. He calleth to me out of Seir, Watchman, what of the night? Watchman, what of the night?

The watchman said, The morning cometh, and also the night: if ye will inquire, inquire ye: return, come.

Son of man, I have made thee a watchman unto the house of Israel: therefore hear the word at my mouth, and give them warning from me.

Son of man, speak to the children of thy people, and say unto them, When I bring the sword upon a land, if the people of the land take a man of their coasts, and set him for their watchman:

But if the watchman see the sword come, and blow not the trumpet, and the people be not warned; if the sword come, and take any person from among them, he is taken away in his iniquity; but his blood will I require at the watchman's hand.

So thou, O son of man, I have set thee a watchman unto the house of Israel; therefore thou shalt hear the word at my mouth, and warn them from me.

The watchman of Ephraim was with my God: but the prophet is a snare of a fowler in all his ways, and hatred in the house of his God.