Exodus 31:15
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.
Six days may work be done;.... Allowed to be done by an Israelite, if he would; for this is not a command to work, but a permission or grant to do it; and therefore, seeing they had so many days granted them for their use, it could not be thought hard and unreasonable that God should claim one day in seven for his own use and service, and oblige them to refrain from work on it:
but in the seventh is the sabbath of rest; from worldly labour, and was typical of spiritual rest here, and eternal rest hereafter:
holy to the LORD; separated from other days, and entirely devoted to the worship and service of God, and to be kept holy to the LORD in all holy and religious exercises, as hearing and reading the word, praying, praising, &c.
whosoever doeth any work in the sabbath day, he shall surely be put to death; the Targum of Jonathan adds, by casting stones, and so we find that the first transgressor of this law we read of was stoned to death, Numbers 15:35.