'Sabbath Day' in the Bible

"Just as you did with my father David, sending him cedars to build him a palace to live in, do the same for me. Look, I'm building a temple dedicated to the name of the LORD my God, to his glory, so we can burn fragrant incense in his presence, display rows of the bread of his presence continuously, and make burnt offerings in the morning, evening, on Sabbath days, during New Moon festivals, and during appointed festivals scheduled by the LORD our God. This is mandated forever in Israel.

This it is therefore that ye shall do. The third part of you priests and Levites which come in the Sabbath day, shall keep the doors;

And the Levites and all Judah did in all things as Jehoiada the priest commanded, and took every man his men: both them that came in and them that went out the Sabbath day: for Jehoiada the priest did let none of the companies depart.

And the king gave a portion of his substance for burnt offerings at morning and even, and for burnt offerings on the Sabbath days and new moons and other solemn feasts, according as it is written in the law of the LORD.