Nothing against the Sabbath in the early Church; the very early Church still kept it and went to synagogues. But the Lord’s Day was the day of the week when the Lord rose from the dead, creating the world and humanity anew – just as God originally created the world, in Genesis, on the first day of the week.
The more it became obvious that Jews and Christians were going to live apart, the less Christians bothered to observe the now-minor holiday of the Sabbath. Only the great holy day, the Lord’s Day, remained. This must have been wrenching for Christians of Jewish heritage, since Sabbath is the heart of the family and the Jewish religion. Jews even personify the Sabbath poetically as a sort of Bride. But the early Christians could not do without the Lord’s Day and the clandestine celebration of the Mass to which they crept early in the morning before it got light – for Sunday was a workday for the Roman Empire back then.
Later on, the Sabbath got important again as a preparation day for the Lord’s Day, much as Friday has always been important to Jews as a preparation day for the Sabbath.
The importance of the Sabbath and the Lord’s Day is a lot clearer in languages which use the post-Christianity names for days of the week (unlike English). In Spanish, Saturday is
sabado, Sabbath, and Sunday is
domingo, the Lord’s (from the Latin
dominica). In Russian, Saturday is
subbota, Sabbath, and Sunday is
voskresenie, Resurrection.
Today, most of America observes both the Sabbath and the Lord’s Day with a custom known as “the weekend”.
