'Sabbath day' in the Bible

Remember the sabbath-day to keep it holy.

For in six days the LORD made heaven and earth, the sea, and all that is in them, and rested the seventh day: wherefore the LORD blessed the sabbath-day, and hallowed it.

Six days may work be done, but in the seventh is the sabbath of rest, holy to the LORD: whoever doeth any work in the sabbath-day, he shall surely be put to death.

Ye shall kindle no fire throughout your habitations upon the sabbath-day.