Reading through the Pentateuch again has been helpful. I have been seeing a number of things in a new light. One of those things, something I knew was there but never really thought through, is the two explanations for the Sabbath. While the substance of the Decalogue is the same in both Exodus 20 and Deuteronomy 5, there are different explanations given for certain commandments. The explanations given for the fourth commandment in each account are the most different:

