That actually came from scripture... SDAs pick and choose which scriptures they believe based on their preconceived ideas about only going to church on Saturday is accepted by the Lord and those that attend on Sunday will go to hell.
They claim nobody gets tortured in hell for eternity except for those that go to church on Sunday
I found out from God's written Word that the requirement to go to church on Saturday is not actually a requirement under the New Covenant. I never studied any commentaries about it at all.
In fact, I learned years ago to not read commentaries as this is being indoctrinated by the author which is how the SDA peoples got deceived on their false doctrines by following the writings of Ellen G White rather than accepting the whole counsel of God
Those that have twisted scripture to claim one can only be saved if they go to church in Saturday... are the ones that have been deceived. It's really sad, but it is what it is. Too bad for the Saturday only peoples.
Of course you studied the scriptures... from the preconceived view point of the Saturday people that caused you to agree with their rejection of the New Covenant and their being in favor of following the Law of Moses.... rejecting the High Priestly Ministry of Jesus Christ.
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He has, and has proven to me from His Word that the doctrines of the Saturday peoples are willingly in error as they have placed the teachings of their religious organization before God's Word. Sad but true.