The feasts of Israel were also considered Sabbath days. While I don't observe all the Hebrew rituals of each feast, I find great importance in the seven feasts or holidays of the Torah. They speak prophectically of the work of the Messiah. The spring feasts spoke to what Jesus did at his first coming and the fall feasts speak to what Jesus will do at his second coming. My wife and I have had discussions about observing the feasts in our own home, but we aren't quite there yet. It is something on my heart that I want to do, not out of religious obligation, but simply because I find great meaning in it, and I believe that God will give us even more revelation of the Messiah if/when we follow through with it.