" The Sabbath is a sign of the covenant. Having received grace and law from God, the covenant people surrender themselves to Him, not only in worship but in the giving of time to God. To yield fifty-two days in the year, on a regular weekly basis, is a covenant act, an acknowledging to God that it is not our power over time but His power on which we depend. We cannot master time and history apart from God. Therefore, by removing ourselves from time, by resting one day in seven, we acknowledge that the determination of all things belongs to God. "
― Rousas John Rushdoony , Genesis: Commentaries on the Pentateuch (Volume #1)