Sabbath

So we were talking about the Sabbath last Friday at this early morning coffee shop thing that I go to and we talked about what it really means to observe Sabbath as a 21st century Christian. Is it still relevant? How do you observe Sabbath? What it's for? At some point I made a comment about it being a day of rest and so whatever is restfull to you is what you should do. I realized, partly that morning, but more-so today how wrong that is. The Sabbath is not just about rest. It's about setting apart a day for God. I was thinking about this today as it is MLK Jr. Day. It's a federal holiday and lots of people have off from work or school. So basically it's a vacation day or a day of rest, but how many people actually "observe" the day for it's inteded purpose? A couple times today I thought to myself, "Oh, it's Martin Luther King Jr Day today". But other than that I did nothing to set today apart as a day to think on or honor the meaning of the day. I think the Sabbath is like that. I (or we) recognize that it's Sunday and those fortunate to have the day off can spend it resting and in the end may think I am so holy b/c I went to church and took a day to rest, but did I really set apart the day for the Lord? Did I take time to rest with Christ or was it all about me? What do I want to do to rest? Did I truly "observe" the Sabbath, or did I just rest?