15 Six days shall work be done; but the seventh, the sabbath of rest, shall be holy to the Lord; whoever does any work in the sabbath day shall surely be put to death.
16 Therefore the sons of Israel shall keep the sabbath, to observe the sabbath throughout their ages for a perpetual covenant.
17 It is a sign between me and the sons of Israel for ever; for in six days the Lord made the heavens and the earth, and on the seventh day he rested and was refreshed.
18 And he gave unto Moses, when he finished speaking with him upon Mount Sinai, two tables of the testimony, tables of stone, written with the finger of God.