There seems to be some discussion today about the Sabbath commandment.
We should be clear that Sunday is not the Sabbath Day. Sunday is not the seventh day of the week but the first day. The Lord Jesus rose from the dead on the first day of the week, on Sunday. This is why we celebrate Easter on Sunday.
When we insist that Christians must obey God by not working on Saturday, the Jewish Sabbath, we reveal that we do not understand the new covenant. The new covenant does repeat some of the Old Testament commands, such as "You shall not steal" ("He who has been stealing must steal no longer"). However, to my knowledge it does not repeat the Sabbath command.
But whether or not the New Testament repeats any part of the Ten Commandments is not the issue. The issue is that our relationship to Christ under the new covenant is entirely different from our relationship to God under the Law of Moses. There is no part of the Law of Moses that applies to the Christian.
But now, by dying to what once bound us, we have been released from the law so that we serve in the new way of the Spirit, and not in the old way of the written code. (Romans 7:6)
Our release from the authority of the Ten Commandments is explained carefully by the Apostle Paul in the seventh chapter of the Book of Romans.