practice of Christians coming together on Sunday as the Lord’s Day for worship. The argument focuses on whether the Sabbath is a cyclical command that requires worship and rest on every seventh day or whether it is specified to a particular day of the week. John Calvin argued that it would be legitimate to have the Sabbath day on any day if all of the churches would agree, because the principle in view was the regular assembling of the saints for corporate worship and for the observation of rest.