What makes the Sabbath unique, is that unlike the annual appointed times, Shabbat is something that takes place every week. Like many who grew up in evangelical Protestant homes, we had not thought too much about the Sabbath in our previous Christian experiences, and simply assumed that we were keeping the Sabbath—at least in spirit—by going to Church on Sunday. While Christian fellowship and worship on Sunday were edifying experiences—at least for us during the 1980s and early 1990s—once a person experiences his or her first Messianic Jewish Shabbat service, you begin to be stimulated in ways you never realized.
I really do not get the “Messianic movement.” Jesus said that He came to bring us all new wine, and told us that you can’t put new wine in old wineskins. The old way of Judaism has been replaced by the new way of Christianity.