This booklet is really written to a special group of people: the Seventh Day Adventists and the Seventh Day Pentecostals. It is not written from any ‘antagonistic’ point of view but it written from a personal point of view, from a Scriptural point of view. Having done much reading on the subject of the Fourth Commandment regarding the keeping of the Sabbath Day, the writer believes the Lord has quickened to him those verses that speak of “the morrow (or day) AFTER the Sabbath”, which really is the first day of the new week, to settle for him why the majority of Christians worship the Lord on the first day of the week, or, “the morrow after the Sabbath”. That is, most do not understand why they worship on that day. The writer has many good Christian friends in the above groups, but believes there are some in, what he calls, “covenantal confusion” on this subject. If this booklet helps on this area, both Adventists and Christian in general, his efforts will not be in vain. After all, true believers keep their relations with the Lord seven days of the week, regardless of “a day” and will be accountable to Him “in that Day”.