This brief work seeks to provide some background information, and hopefully much needed clarity for Christians who must (even if only privately), account for their choice of a particular day of worship. Historically, the vast majority of Christians have chosen Sunday, the first day of the week as the sabbath—the accepted day to assemble corporately, or to individually approach God for the purpose of worshipping God (God the Father, God the Holy Spirit, and God the Son--Jesus Christ).