'On the Sabbath' in the Bible

What Jehoiada the priest ordered is precisely what the descendants of Levi and all of Judah did. Each of them took the men who were on duty on the Sabbath as well as those who were off duty. Jehoiada the priest did not release the divisions from service,

He also gave a portion of his own income for both morning and evening burnt offerings, for burnt offerings on the Sabbath, New Moons, and for the scheduled festivals, as is recorded in the LORD's Law.