'Sabbath' in the Bible

This is the thing which ye shall do: a third part of you that come in on the sabbath, of the priests and of the Levites, shall be keepers of the doors;

And the Levites and all Judah did according to all that Jehoiada the priest commanded; and they took every man his men, those that were to come in on the sabbath, with them that were to go forth on the sabbath; for Jehoiada the priest did not liberate the divisions.

to fulfil the word of Jehovah by the mouth of Jeremiah, until the land had enjoyed its sabbaths. All the days of its desolation it kept sabbath, to fulfil seventy years.