Exodus 31:15

For six days you shall do work. On the seventh day, it is the Sabbath, a rest sanctified by the Lord. All who will have done work on this day shall die

Other versions

King James Version

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

English Standard Version

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

New International Version

For six days, work is to be done, but the seventh day is a Sabbath of rest, holy to the LORD. Whoever does any work on the Sabbath day must be put to death.