'Sabbath day' in the Bible

Remember the Sabbath day, to keep it holy.

for in six days LORD made heaven and earth, the sea, and all that is in them, and rested the seventh day. Therefore LORD blessed the Sabbath day, and hallowed it.

Six days shall work be done, but on the seventh day is a Sabbath of solemn rest, holy to LORD. Whoever does any work on the Sabbath day, he shall surely be put to death.

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