2 Kings 9:17
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?
Torrey's Topical Textbook—AKJV

Isaiah 21:5
Prepare the table, watch in the watchtower, eat, drink: arise, you princes, and anoint the shield.
Torrey's Topical Textbook—AKJV