<P> In part, the reason Orthodox Christians continue to celebrate Saturday as Sabbath is because of its role in the history of salvation: it was on a Saturday that Jesus "rested" in the tomb after his work on the cross . For this reason also, Saturday is a day for general commemoration of the departed, and special requiem hymns are often chanted on this day . </P> <P> The Ethiopian Orthodox church (part of the Oriental Orthodox communion, having about 40 million members) observes both Saturday and Sunday as holy, but places extra emphasis on Sunday . </P>

When did sunday become the lord's day