I blogged over at Crossway on the practice of remembering the Sabbath.
In the opening lines of the Ten Words, God prompted his people to an act of recall: “I am the Lord your God, who brought you out of the land of Egypt” (Ex. 20:2). He reminded them of his mighty delivering arm just fifty days earlier. In the fourth word, the concept of remembering is introduced again, and this time explicitly so: “Remember the Sabbath day, to keep it holy.” But this time the charge is to recall an ancient memory instead of a recent one. In the preamble to the Ten Commandments, God reminds Israel that he is her deliverer. In the fourth commandment, God reminds Israel that he is her Creator.