Justin the martyr notes the Christians met on the first day of the week.
Dr. Samuele Bacchiochi received his PH’d from the Pontifical Gregorian University at the Vatican.
His Thesis was on the change of the Sabbath to Sunday. He traced the change and with the archives in the Vatican available to him, his research shows the there is no evidence the Apostolic church met on the first day of week as a substitute for the Sabbath.
On the contrary in Acts the Gentiles called for Paul to come out again “next Sabbath” to hear more. And that was the Gentiles.
The change occured over about a 100 year time period AFTER the apostolic churc and it was the Christians and Government authorities like Constantine who were responsible to distance themselves from the Jews.
Jesus said not a jot or tittle from the law would change.....till heaven and earth pass away. John himself sees the “Lord’s day” in Revelation.......God is the Lord, he calls the Sabbath ‘MY HOLY DAY’
Not a single text in the new testament calls the first day of the week, the “Lord’s day.” It merely refers to it as the “first day”........and where we do see “Lord’s day” Revelation 1:10, there is no mention of the first day.
The greatest theological case for no change in the Bible from the Sabbath to Sunday was actually made by the Roman Catholic church herself. In a series or article published around the turn of the century.
She knows she changed the commandment and wants her credit for the change because.....”who else would?”
And she challenges all Protestants......”Why do you keep Sunday” if you are going by the Bible? Nowhere does the Bible declare a change in the Sabbath.
We the church changed it and when you honor Sunday, you are paying allegiance to her..the Papacy.
Sunday is the child of the Papacy and she knows it.
It’s an amazing read......very deep. She looks at every single first day text in scripture.....
And she does mention Seventh day Adventists.....as the ONLY Protestants who keep the correct Bible Sabbath. She calls them an insignificant sect.
It’s deep to read this.......most won’t get it. She’s condescending, she’s arrogant, she’s belligerent.....
And she’s correct. You should read this......her theology is brilliant:
https://www.romeschallenge.com/