'On the Sabbath' in the Bible

Behold, I build a house to the name of the LORD my God, to dedicate it to him, and to burn before him sweet incense, and for the continual showbread, and for the burnt offerings morning and evening, on the sabbaths, and on the new moons, and on the solemn feasts of the LORD our God. This is an ordinance forever to Israel.

Even according to a certain duty every day, offering according to the commandment of Moses, on the sabbaths, and on the new moons, and on the solemn feasts, three times in the year, even in the feast of unleavened bread, and in the feast of weeks, and in the feast of tabernacles.

This is the thing that you shall do; A third part of you entering on the sabbath, of the priests and of the Levites, shall be gatekeepers of the doors;

So the Levites and all Judah did according to all things that Jehoiada the priest had commanded, and took everyone his men that were to come on duty on the sabbath, with them that were to go off duty on the sabbath: for Jehoiada the priest dismissed not the divisions.