'Watchmen' in the Bible

We did not change clothes -- not I, nor my relatives, nor my workers, nor the watchmen who were with me. Each had his weapon, even when getting a drink of water.

I said to them, “Do not let the gates of Jerusalem be opened until the sun is hot; and while the watchmen are still standing guard, have them shut and bar the doors. Appoint guards from the residents of Jerusalem, each at his post [on the wall], and each in front of his own house.”

And over the doorway of Ephraim and by the old door and the fish door and the tower of Hananel and the tower of Hammeah, as far as the sheep door: and at the doorway of the watchmen they came to a stop.