New Defender's Study Bible Notes
20:8 Remember. The Hebrew word for “remember” actually is in the sense of “mark” or “set aside.” The Israelites didn’t need to be told to remember the sabbath, because they, like other nations had been keeping time in weeks ever since the first week (Genesis 2:1-3). Note the references to the sabbath in the giving of the manna, prior to the giving of the Law (Exodus 16:23-29).
20:10 the seventh day. It is important to note the principle of one rest day following six days of work. The Hebrew word for “sabbath” does not mean “Saturday” or “seventh day;” it means “rest” or “intermission.” The institution of the sabbath (one day of rest, worship and remembrance of the Creator) was “made for man,” not as an arbitrary legalistic ritual (Mark 2:27), whether remembered on the first or last or any other day of the locally observed week (even assuming the specific days could actually be traced back to the beginning, an assumption incapable of external proof). In fact, the Christian observance of the first day as the rest day seems most appropriate, signifying now a “marking” not only of God’s completed work of creation but also His completed work of redemption of the creation (note His victory cry on the cross–“it is finished!”) affirmed forever by His victory over sin and death on the first day of the Jewish week at the time.