Moses
Exodus 31:14ESV·traditional attribution

You shall keep the Sabbath, because it is holy for you. Everyone who profanes it shall be put to death. Whoever does any work on it, that soul shall be cut off from among his people.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A strict command for the sanctification of the sabbath day, Exo 31:13-17. The law of the sabbath had been given them before any other law, by was of preparation (Exo 16:23); it had been inserted in the body of the moral law, in the fourth commandment; it had been annexed to the judicial law (Exo 23:12); and here it is added to...

Commenting on Exodus 31:12-18

John Gill Reformed Baptist @doctorgill

Ye shall keep the sabbath therefore,.... Strictly observe it, according to the rules given concerning it: for it is holy unto you; a day that was set apart of God for holy exercises, peculiarly on their account: everyone that defileth it; by doing any servile work upon it, or not observing it in a religious way: shall surely be put to death; by the hand...

Geneva Bible Notes Reformed @genevanotes

Ye shall keep the sabbath therefore; for it [is] holy unto you: every one that defileth it shall surely be put to death: for whosoever doeth [any] work therein, that soul shall be cut off from among his people. (g) God repeats this point because the whole keeping of the law stands in the true use of the sabbath, which is to stop working and...