Analyzing the 8 Texts
1.) 'In the end of the Sabbath, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre,' Matt. 28:1.
2.) 'And very early in the morning the first day of the week, they came unto the sepulcher at the rising of the sun,' Mark 16:2. It's the same event as in Mat. 28:1. No hint of Sunday becoming a day of rest and worship.
3.) 'Now when (Yahshua) was risen, early the first day of the week He appeared to Mary Magdalene, out of whom he had cast seven devils,' Mark 16:9. Still no Sunday observance here. The Savior's appearance to Mary Magdalene doesn't in any way transform Sunday into a set-apart day in lieu of the Sabbath.
4.) 'Now upon the first day of the week, very early in the morning, they came unto the sepulchre, bringing the spices which they had prepared, and certain others with them,' Luke 24:1. Luke's account of the women's visit to the tomb neither indicates rest or worship. They came purposely to anoint the body of (Yahshua) with spices, thinking it is still in the tomb.
5.) 'The first day of the week cometh Mary Magdalene early, when it was yet dark, unto the sepulchre, and seeth the stone taken away from the sepulchre,' John 20:1. The same event as recorded by Matthew, Mark, and Luke and irrelevant to Sunday keeping.
6.) 'Then the same day at evening, being the first day of the week, when the doors were shut where the disciples were assembled for fear of the Jews, came (Yahshua) and stood on the midst, and saith unto them, 'Peace be unto you',' John 20:19. The disciples were assembled for fear of the Jews- -not for worship. Note that the doors were shut (probably barricaded).
7.) 'And upon the first day of the week, when the disciples came together to break bread, Paul preached unto them, ready to depart on the morrow; and continued his speech until midnight,' Acts 20:7. This is not a Sunday morning worship service. The disciples were gathered together to eat a common meal. Compare Acts 2: 44 & 46. Note that in the Jewish reckoning of the day, the event happened early on our Saturday evening. And there were many lights, verse 8. The fact that Paul was ready to depart on the morrow (a Sunday), shows that he has no regard for the first day of the week. Paul is a Sabbath keeper, Acts 17:2.
8.) 'Upon the first day of the week let every one of you lay by him in store, as (Elohim) hath prospered him, that there be no gatherings when I come,' 1 Corinth. 16:2. I used to take this verse as a typical example of Sunday worship service. However, considering that the entire New Testament is devoid of a command to observe Sunday, I began to see that Sunday keeping based on 1 Corinth. 16:2 rests on mere conjecture.
The question is: Did Paul and the apostolic Assemblies do a turnaround, i.e, embracing Sunday in lieu of the Sabbath? I decided to find out more, beginning with Paul.
a.) 'As his custom was, Paul went into the synagogue, and on three Sabbath days he reasoned with them from the Scriptures,' Acts 17:2.
b.) 'But this I confess unto thee, that after the way which they call heresy, so worship I the (Elohim) of my fathers, believing all things written in the law and in the prophets,' Acts 24.14. Evidently, Paul remained steadfast and true to his convictions. The same is true with the other believers, as Luke, who was with Paul in his travels, put on record details of their activities in the book of Acts. There is nothing at all in Luke's writings to suggest that the early assemblies changed their day of worship to Sunday.