'On the Sabbath' in the Bible

lo! I, am about to build a house for the Name of Yahweh my God, to hallow unto him - to burn before him sweet incense, and for a continual setting in array, and to offer ascending-sacrifices morning and evening, on the sabbaths, and on the new moons, and on the appointed feasts of Yahweh our God,-age-abiding, is this law for Israel.

This, is the thing that ye shall do, - A third of you entering on the sabbath, both of the priests and of the Levites, as doorkeepers of the porch;

So the Levites and all Judah did according to all that Jehoiada the priest commanded, and they took every man his men, who were coming in on the sabbath, with them who were going out on the sabbath, - for Jehoiada the priest dismissed not the courses.