'Sabbath day' in the Bible

Remember the sabbath day, to keep it holy.

for in six days Jehovah made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore Jehovah 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 Jehovah: whosoever doeth 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.