Messianic believers follow much larger portions of Mosaic law than most Christians. Do other Christians see a difference between moral versus civil law, such as "No, don't murder, but grace will let you enjoy a ham sandwich?"
Exodus 20:1 - 21
ESV - 1 And God spoke all these words, saying. 2 I am the Lord your God, who brought you out of the land of Egypt, out of the house of slavery.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
The word Christian means Christlike, we are to follow His example. So, if Jesus and the early church honored the Sabbath before and after the death, burial, and resurrection, then its pretty clear to me we should follow their lead.
Christ fulfilled the law (Matthew 5:17, Ephesians 2:15) therefore His followers live under grace and not under the law. While the Sabbath was a part of the law (Exodus 20:8), most importantly it was given to the nation of Israel (Exodus 31:16, Ezekiel 20:12) and not to the Church.
The reason for the Sabbath was to remind the nation of Israel that God had delivered them from the land Egypt and a life of slavery (Deuteronomy 5:15).