I hear many say that we are led by the Spirit now and that some of what God had written is in the past and shouldn't be considered meaning the law. God endorsed the Sabbath to share with others, (which is a sacrifice in itself) and to meditate on His greatness. Is the Sabbath Saturday or Sunday? My answer would be, "does it matter? Seven will always be seven. Even more, there are Sabbath feasts we should recognize by, and through the Spirit of God. What time of year they are, and what day of the month they are, most people don't know, not even Jewish Rabbis, it's all just an estimate. With that said, the Sabbath should be in our heart 24/7. There are really only 3 feasts in my life as God has ordained. The feasts are called " don't add to God's original will, with an attitude of self denial" and that's called the feast of unleavened bread. The feast of weeks is for the gathering of harvest, and ingesting the fruit of the Spirit, but the laborers are very few now days. and then there is a time to remember His mercy and grace with the feast of tabernacles, that includes meditation of all that God Has ever done and the hope of tomorrow. These are Sabbaths along with entering into His rest. Do I go in and out of His rest? No, because I submit to His call to present myself a living sacrifice, and really want to die daily. With that said, if God is Spirit, what's the difference between what He gave to Moses, and what He sent at Pentecost? Get real people.