Isaiah 21:6
For the Lord said this to me: "Go, set watchman in position. He must 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 when he came, and he said, "I see a company." Joram said, "Take a horseman and send [him] to meet them." And he said, "Is it peace?"
Isaiah 62:6
I have appointed watchmen upon your walls, Jerusalem; all day and all night they shall never be silent. You who profess Yahweh have no rest.
Jeremiah 51:12-13
Against the walls of Babylon raise a banner; {post a strong watch}, post watchmen, prepare the ambushes, for Yahweh has both planned as well as performed what he has spoken concerning the inhabitants of Babylon.
Ezekiel 3:17
"Son of man, I have appointed you [as] a watchman for the house of Israel. When you hear a word from my mouth, then you must warn them from me.
Ezekiel 33:2-7
"Son of man, speak to {your people}, and you must say to them, 'A land, if I bring over it a sword and the people of the land take a man, one from their number, and they appoint him for them as a watchman,
Habakkuk 2:1-2
I will stand at my post, and station myself on [the] rampart. And I will keep watch to see what he will say to me, and what he will answer concerning my complaint.