'Watchman' in the Bible

For the Lord said this to me: "Go, set watchman in position. He must announce what he sees.

Then [the] {watchman} called, "Lord, I [am] standing on [the] watchtower continually by day, and I [am] standing at my post {throughout} the night.

The oracle of Dumah: [One is] calling to me from Seir, "Watchman, what {of} [the] night? Watchman, what {of} [the] night?"

[The] watchman says, "Morning comes, and also [the] night. If you will inquire, inquire; {come back again}."