"And the duties of a watchman in the Old Bible, was a man that was selected. He must be a man that is alert of the Heavenly bodies. He must know just exactly where the stars are hanging to tell the perfect time to the people.
Many of the wearied would go out, maybe, and couldn't sleep, restless, and would scream up at the watchman in the tower, and would scream out these words, "Watchman, what of the night?" And he would look at the stars, and then he would say it is such-and-such a time. Then they would go back to their bed or wherever they choose to dwell, waiting for the daylight to come when the tired, and weary, restless night would be over.
God, have mercy. I wonder if it isn't time today that we didn't call out to our great Watchman, "What of the night?" There's an approaching danger coming on, and the whole world seems to be shaking under its influence.
The watchman also had to be on duty all times. And he was to warn the people of approaching dangers. That was his duty to watch for the approaching danger. And he was up on a tower that was built much higher than the walls. And this tower he had up there in it, the books of astronomy and so forth, so he could watch the stars and tell the time. Any approaching thing of time of day he could tell it."
"Watchman, What of the Night?" - Bro. W.M. Branham - 30th November 1958