Exodus 31:15 WBT

¹³  Speak thou also to the children of Israel, saying, Verily my sabbaths ye shall keep: for it [is] a sign between me and you throughout your generations; that [ye] may know that I [am] the LORD that doth sanctify you.

¹⁴  Ye shall keep the sabbath therefore: for it [is] holy to you. Every one that profaneth it shall surely be put to death: for whoever doeth [any] work therein, that soul shall be cut off from among his people.

¹⁵  Six days may work be done, but in the seventh [is] the sabbath of rest, holy to the LORD: whoever doeth [any] work in the sabbath-day, he shall surely be put to death.

¹⁶  Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, [for] a perpetual covenant.

¹⁷  [It is] a sign between me and the children of Israel for ever: for [in] six days the LORD made heaven and earth, and on the seventh day he rested and was refreshed.