Isaiah 21:6
For the Lord said to me, "Go, set a watchman. Let him declare what he sees.
2 Kings 9:17-20
Now the watchman was standing on the tower in Jezreel, and he spied the company of Jehu as he came, and said, "I see a company." Joram said, "Take a horseman, and send to meet them, and let him say, 'Is it peace?'"
Isaiah 62:6
I have set watchmen on your walls, Jerusalem; they shall never hold their peace day nor night: you who call on Yahweh, take no rest,
Jeremiah 51:12-13
Set up a standard against the walls of Babylon, make the watch strong, set the watchmen, prepare the ambushes; for Yahweh has both purposed and done that which he spoke concerning the inhabitants of Babylon.
Ezekiel 3:17
Son of man, I have made you a watchman to the house of Israel: therefore hear the word from my mouth, and give them warning from me.
Ezekiel 33:2-7
Son of man, speak to the children of your people, and tell them, When I bring the sword on a land, and the people of the land take a man from among them, and set him for their watchman;
Habakkuk 2:1-2
I will stand at my watch, and set myself on the ramparts, and will look out to see what he will say to me, and what I will answer concerning my complaint.