I think GOD recognizes many different faiths, if they first recognize Jesus Christ is the Saviour of the World they Love GOD with all thier heart, mind and soul, and love thier neighbor as themselves.
One thing that has always kind of nagged at me was the Sabbath DAY..It is in the Commandments of GOD and I cannot find scriptual basis in why it was changed.
Nothing changed.
But are you required to observe the law for salvation or righteousness?
Read Romans and Galations.
If you are observing one law for righteousness, then you must observe them all.
We have an Old Testament and a New Testament.
Jesus did have the ability to change the rules, and He did.
I believe that Christianity must pay attention to tradition AND to Scripture. From the very EARLY Church, Christians understood that the “Sabbath Day” was now Sunday and not Saturday.
The problem I have, with supposedly “Christian” Faiths, who go directly to the text of Scripture is this:
They are using Scripture in a way it was not intended, by the very people who WROTE the documents. Much of Scripture was an oral history. Much of it was a rebuke of certain practices, when a group went astray. Never, in the New Testament, can you find a complete guide to what Christian Life was like, in the Early Church. The very people who WROTE Scripture expected those habits and traditions to be passed on, just as the other ORAL traditions had been passed on for years, before being put to writing.
So, that something can NOT be found in the Bible is much like saying that the “users guide” for your car, does not contain a map to Buffalo, and therefore, you are NOT allowed to drive to Buffalo. (That, of course, is not what your “users guide” intended.) Also, I understand your charitable view towards others of faith, and I mostly share that view. However, the "Millerites" who are now in the Jahovah's Witness and 7th Day adventist ranks are among the most hostile on the planet, towards other faiths. Their literature is full of hate and lies and historical inaccuracies, as well as some crack pot theories. They do not allow their members to explore other faiths, or to have much contact with other faiths. Understandable, since any Baptist, Catholic, Evangelical or member of most other faiths can poke holes in the Millerite theories.
Roman calendar vs the Jewish one. Roman converts {Gentiles} used the Roman calendar and Jews the Hebrew calendar. Sabbath in the Jewish calendar IIRC began at dusk on Friday and ran till dusk Saturday. IMO it doesn't matter what day a person uses. The Sabbath was made for mans well being a day of physical rest the body requires and spiritual renewal the spirit requires.
I think Christ addressed the issue of many churches early on. His Disciples were jealous over another group preaching and healing in His name. Such jealousy still continue into this age between the churches.
And you won't find one.
It was changed by a decree of a Caesar, Constantine, I believe.
Now, how much that matters depends on how much of a biblical literalist you want to be, but for those who say it doesn't, Saturday should work just as well for you.
For the record, I'm not much of a biblical literalist, but I enjoy the debate until it gets nasty.