Foundational to right worship and liturgical practices is an undergirding conviction regarding when to gather for worship and what this day looks like. The fourth commandment in the Decalogue reads, “Remember the Sabbath day, to keep it holy. Six days you shall labor and do all your work, but the seventh day is the Sabbath of the Lord your God. In it you shall do no work… For in six days the Lord made the heavens and the earth, the sea, and all that is in them, and rested the seventh day. Thereforethe Lord blessed the Sabbath day and hallowed it” (Ex. 20:8-11). This commandant of the Jewish Sabbath under the Old Covenant is fairly clear and straightforward. But how does it relate to the New Covenant and what Christians refer to as ‘the Lord’s Day’?