This is the thing that you must do: one third of you priests and Levites {coming off duty on the Sabbath} [shall be] gatekeepers at the entrances

And the Levites and all Judah did according to all that Jehoiada the priest commanded. And they each took his men [who were] {coming off duty on the Sabbath} with {the ones going out to duty on the Sabbath}, for Jehoiada the priest did not dismiss the working groups.

to fulfill the word of Yahweh by the mouth of Jeremiah, until the land has enjoyed its Sabbaths. All the days of desolation it kept Sabbath, to fulfill seventy years.