When we discuss the Sabbath in lessons, we can either focus on the things that we should not do to keep the day holy or we can focus on the things we can and should do. The 16th Gospel Doctrine lesson for the Doctrine and Covenants focuses more on the latter than on the former, discussing attending Sunday meetings and taking the sacrament first before moving on to the concept of a day of rest and keeping the day holy. And I think for most Mormons today the focus is on what we do on the Sabbath—go to Church.