Jesus' casting out the unclean spirit shows what a "Sabbath surrender" is all about. "Anything that is not the fullness of the Holy Spirit," says brother Ed, "can be included under unclean spirit, and we need to be delivered." The healing of fever has a message for us about rest and service. Christian service is designed by God in Sabbath truth to be spontaneous, from natural weakness to supernatural strength, and a byproduct of union with Him.