Isaiah 21:6
For thus the Lord hath charged me: "Go thy way, and set a watchman, that he may tell what he seeth."
2 Kings 9:17-20
And the watchmen that stood on the tower in Jezreel spied the company of Jehu as he came, and said, "I see a company." And Jehoram said, "Take a horseman and send against them, and let him ask whether it be peace."
Isaiah 62:6
Upon the walls of Jerusalem, I have set keepers which shall never cease, neither by day nor yet by night.
Jeremiah 51:12-13
Set up tokens upon the walls of Babylon, make your watch strong, set your watchmen in array, yea hold privy watches: and yet for all that shall the LORD go forth with the device, which he hath taken upon them that dwell in Babylon.
Ezekiel 3:17
"Thou son of man, I have made thee a watchman unto the house of Israel: therefore take good heed to the words, and give them warning at my commandment.
Ezekiel 33:2-7
"Thou son of man, Speak to the children of thy people, and tell them, 'When I send a sword upon a land, if the people of the land take a man of their country, and set him to be their watchman:
Habakkuk 2:1-2
I stood upon my watch, and set me upon my bulwark, to look and see what he would say unto me, and what answer I should give him that reproveth me.