'Posts' in the Bible

And the priests stood at their posts with the Levites, with the instruments of the song of Yahweh that King David had made to give thanks to Yahweh--for his loyal love [is] everlasting--whenever David offered praise by their hand. Now the priests sounded trumpets [standing] opposite them, and all Israel stood.

besides their enrollment by genealogy, to males from three years old and upward, to all who came into the house of Yahweh, {as each day required} for their service in their posts according to their working groups.

And the enrollment of the priests [was] according to the house of their fathers, and the Levites, from twenty years old and upward, according to their posts by their working groups.

And he set the priests at their posts and encouraged them in the service of the house of Yahweh.