'Sabbath' in the Bible

Now while the children of Israel were in the waste land, they saw a man who was getting sticks on the Sabbath day.

And on the Sabbath day, two he-lambs of the first year, without any mark, and two tenth parts of the best meal for a meal offering mixed with oil, and its drink offering:

This is the burned offering for every Sabbath day, in addition to the regular burned offering, and its drink offering.