Exodus 31:12-17 New King James Version (NKJV)
The Sabbath Law
12 And the Lord spoke to Moses, saying, 13 “Speak also to the children of Israel, saying: ‘Surely My Sabbaths you shall keep, for it is a sign between Me and you throughout your generations, that you may know that I am the Lord who sanctifies[a] you. 14 You shall keep the Sabbath, therefore, for it is holy to you. Everyone who [b]profanes it shall surely be put to death; for whoever does any work on it, that person shall be cut off from among his people. 15 Work shall be done for six days, but the seventh is the Sabbath of rest, holy to the Lord. Whoever does any work on the Sabbath day, he shall surely be put to death. 16 Therefore the children of Israel shall keep the Sabbath, to observe the Sabbath throughout their generations as a perpetual covenant. 17 It is a sign between Me and the children of Israel forever; for in six days the Lord made the heavens and the earth, and on the seventh day He rested and was refreshed.’ ”
Exodus 31:12-17 New International Version (NIV)
12 Then the Lord said to Moses, 13 “Say to the Israelites, ‘You must observe my Sabbaths. This will be a sign between me and you for the generations to come, so you may know that I am the Lord, who makes you holy.
14 “‘Observe the Sabbath, because it is holy to you. Anyone who desecrates it is to be put to death; those who do any work on that day must be cut off from their people. 15 For six days work is to be done, but the seventh day is a day of sabbath rest, holy to the Lord. Whoever does any work on the Sabbath day is to be put to death. 16 The Israelites are to observe the Sabbath, celebrating it for the generations to come as a lasting covenant. 17 It will be a sign between me and the Israelites forever, for in six days the Lord made the heavens and the earth, and on the seventh day he rested and was refreshed.’”