'Watches' in the Bible

And I said to them that the gates of Jerusalem should not be opened until the sun was hot, and that they should shut the doors and bar them while they stood by; and that there should be appointed watches of the inhabitants of Jerusalem, every one in his watch, and every one over against his house.

and Bakbukiah and Unni, their brethren, were over against them as watches.

Arise, cry out in the night, in the beginning of the watches; pour out thy heart like water before the face of the Lord: lift up thy hands toward him for the life of thy young children, who faint from hunger at the top of all the streets.

(Behold, I come as a thief. Blessed is he that watches and keeps his garments, that he may not walk naked, and that they may not see his shame.)