'Sabbath day' in the Bible

And the burnt offering that the ruler shall offer to Jehovah in the sabbath day shall be six lambs without blemish, and a ram without blemish.

And when the ruler shall prepare a free-will burnt offering or peace offerings willingly to Jehovah, one shall then open to him the gate that faces eastward, and he shall prepare his burnt offering and his peace offerings, as he did on the Sabbath day. And he shall go out. And after his going out, one shall shut the gate.