While the Lord had a few things to say about the various churches mentioned in Revelations, He had hoped that they would maintain the same doctrine. The point is that no church was perfect. Certainly, He would not have expected any church to devalue the work of his servant Paul the Apostle who said it was appropriate to choose a day to worship; so long as you choose a day to keep it holy. At any rate, the sabbath remains as Saturday traditionally. His(Paul's) hope was not to impose His culture on the gentiles coming into a faith in Christ. Peter made similar comment in the book of Acts. Also, many arguments with various denominations are based on underlining some scriptures on which to base one's sense of authority over your Baptist or Pentecostal neighbour while denying any role of other scriptures on the discussion where such discussions should be based on fellowship and not on seeking a feeling of superiority. Why don't we read all the scriptures? Most importantly, if you see your neighbour drowning on the sabbath, help him. If your dog is caught under a wheel although it is the sabbath, move the vehicle. Read Mark 3. The Lord will thank you for saving a life. You might get the keys to the city as well.