'On the Sabbath' in the Bible

See! I am building a house for the name of the Lord my God, to be made holy to him, where perfumes of sweet spices will be burned before him, and the holy bread will be placed at all times, and burned offerings will be offered morning and evening, on the Sabbaths and at the new moons, and on the regular feasts of the Lord our God. This is a law for ever to Israel.

Offering every day what had been ordered by Moses, on the Sabbaths and at the new moon and at the regular feasts three times a year, that is at the feast of unleavened bread, the feast of weeks, and the feast of tents.

This is what you are to do: let a third of you, of the priests and Levites, who come in on the Sabbath, keep the doors

So the Levites and all Judah did as Jehoiada the priest had given them orders: every one took with him his men, those who were to come in and those who were to go out on the Sabbath; for Jehoiada had not sent away the divisions.