Exodus 31:13-16 Holman Christian Standard Bible (HCSB)
13 “Tell the Israelites: You must observe My Sabbaths, for it is a sign between Me and you throughout your generations, so that you will know that I am Yahweh who sets you apart. 14 Observe the Sabbath, for it is holy to you. Whoever profanes it must be put to death. If anyone does work on it, that person must be cut off from his people. 15 Work may be done for six days, but on the seventh day there must be a Sabbath of complete rest, dedicated to the Lord. Anyone who does work on the Sabbath day must be put to death. 16 The Israelites must observe the Sabbath, celebrating it throughout their generations as a perpetual covenant.