Note 746 — Chapter VIII · THE HEBREW SABBATH
Reading edition
The form of the Fourth Commandment in the First Decalogue (Exodus, xx, 8), “Remember the Sabbath Day, to keep it holy,” indicates not the institution of a new day but the sanctioning of an old one. In the Second Decalogue (Deuteronomy, v, 12), the commandment reads: “Observe the Sabbath Day, to keep it holy.” The word “holy” in these injunctions has the force of “set apart ritually,” “separated from common use,” i.e., taboo.