Isaiah 21:6
For thus the Lord said to me: "Go, set a watchman; let him announce what he sees.
2 Kings 9:17-20
Now the watchman was standing on the tower in Jezreel, and he saw the company of Jehu as he came and said, "I see a company." And Joram said, "Take a horseman and send to meet them, and let him say, 'Is it peace?'"
Isaiah 62:6
On your walls, O Jerusalem, I have set watchmen; all the day and all the night they shall never be silent. You who put the LORD in remembrance, take no rest,
Jeremiah 51:12-13
"Set up a standard against the walls of Babylon; make the watch strong; set up watchmen; prepare the ambushes; for the LORD has both planned and done what he spoke concerning the inhabitants of Babylon.
Ezekiel 3:17
"Son of man, I have made you a watchman for the house of Israel. Whenever you hear a word from my mouth, you shall give them warning from me.
Ezekiel 33:2-7
"Son of man, speak to your people and say to them, If I bring the sword upon a land, and the people of the land take a man from among them, and make him their watchman,
Habakkuk 2:1-2
I will take my stand at my watchpost and station myself on the tower, and look out to see what he will say to me, and what I will answer concerning my complaint.