Wrong--that is the truth according to the bible! Not one of those verses says they were together for the porpoise of worshipping on that day.
Funny those are the very same ones we use to prove there was no worshipping on Sundays!! The only times Sundays are mentioned is when something out of the ordinary happened on those days!
- Jesus rose on the first day of the week not the Sabbath: Mk 16:9--Right, even on the sabbath He rested!
- All 6 appearances of Jesus happen on two Sundays, none on Sabbath. Mk 16:9; Mt 28:5-9; Lk 24:34; Lk 24:13-15; Lk 24:33,36 + Jn 20:19; Jn 20:26---Exactly! He was keeping the Sabbath with the disciples!
- Christians are recorded assembling three times on Sunday after resurrection and before ascension, never on the Sabbath. Jn 20:19 Jn 20:26 Acts 2:1 (We do not claim that these were worship services, just the early starting point of Sunday gatherings)Right--they were not worshipping on these days! And they make one big mistake--they are not using how the bible counts for days-it is evening to morning--meeting on Sat. night, In other words--the 1st day of the week begins Sundown Saturday night.
- The only time Christians are recorded to have assembled together was on a Sunday in Acts 20:7, never does it say the disciples assembled on the Sabbath.-- Right!! Only time! Same as above-they met on Saturday night, the beginning of the 1st day of the week, and Paul preached until midnight. He didn't preach from Sunday morning until midnight! That isn't a sermon, that's a filibuster! He reached from sundown Saturday night until midnight. Still a mighty long sermon! They ate and then he preached some more--until the morning---which would have been Sunday morning. If Paul had kept Sunday-he would not have traveled that day. And if he had meant Monday morning, it would then have been the 2nd day of the week. In other words-they met after Sundown Saturday night (evening Sabbath vespers as it were!)
- The only day ever mentioned when Christians broke bread was on Sunday: Acts 20:7--Right--Same as above
- Christians are commanded every Sunday to give into a common treasury of the church: 1 Cor 16:1-2---not exactly--they were commanded to gather the money on Sunday-what they had to give from the previous weeks' of labor--and hold it for when Paul came so as to not to gather money together at the time he came, but have it ready for Paul when he came by on Sunday on his way to Jerusalem--If he had kept Sunday he would not have traveled on Sunday.
- Jesus was declared the Son of God on Sunday: Rom 1:4--He was resurrected on Sunday-declaring with that act that He was indeed the Son of God--it has already been established He resurrected on Sunday--resting on the Sabbath.
- Ps 2:7 "Today I have begotten thee" was fulfilled on Sunday when he rose: Acts 13:33--Right, He still rested on the Sabbath.
- The sign that Jesus was glorified was given on Sunday: Jn 7:39 + Acts 2:1,32--Still nothing to suggest that Jesus said to worship on that day instead of the Sabbath. They would have observed the Sabbath before Pentecost.
- The church officially began on Pentecost Sunday: Acts 2:1--They were together in one accord on the day of Pentecost for that purpose-not to have Sabbath wordship.
- Jesus was crowned king on a Sunday: Acts 2:33-36---Right--Would not have been crowned on the Sabbath.
- The disciples reception of the promise of the Father on Sunday: Acts 1:4-5; 2:1-4
- The Holy Spirit first fell upon the apostles on a Sunday: Acts 2:1-4
- Salvation first preached by Peter on Sunday: Mt 16:19; Acts 2:1,38,40-41
- The Keys to the Kingdom of God were first used on Sunday: Mt 16:19
- The great "Triumphal entry" (also called "Palm Sunday") happened on the first day: Luke 13:32--Absolutely--Christ would not have done so on a Sabbath!
- The time between the Lord's resurrection (sheaf waving day) and Pentecost was Sunday to Sunday counting of 50 days. The starting and stopping time was on the 1st day.
- First time Jesus worshiped after resurrection was on the first day by Thomas (Jn. 20:26). Doesn't say a word about worship. They were together on the first day of the week--at evening-meaning again it was on a Saturday night. Then they got together 8 days later--which would have been Sunday night--if they had gathered together first on Sunday night--8 days later would have been Monday.
- The first time we could be born again to a living hope was on a Sunday: 1 Pet. 1:3
- The first time Jesus had communion after his resurrection with His disciples, was on a Sunday: (Lk. 24:1, 13, 28-35)That was not communion--they were having dinner!!
- Pentecost was a Sunday - Sunday duration of 50 days. The starting point and stopping point of counting the 50 days was a Sunday - Sunday period!--Yes--And??? Nothing to do with Sabbath!
I skipped some--didn't really see any relevance to Sabbath.
OK--have to say this---I have diabetic neuropathy in my hands, I can't direct them too well--it takes me forever to type anything. I used to type 80 words a minute with maybe one mistake--I now can't type a little sentence without mistakes--sometimes not even one word! I proof read about 3-4 times and still don't catch all mistakes. Sorry I take so long--I do the best I can. I keep doing this because it is good therapy for my hands.
(You don't need to apologize for taking the time you need. I have no expectation of any instant responses.

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See, now you are completely redefining what worship is and severely limiting it to a very narrow concept. Whenever we gather together in his name is worship regardless of what we are doing. You don't think having a meal with the transformed Christ in the flesh isn't worship? We're talking about communion with him in his very person! Wow, I would be overcome had I been there!
The reason you can't find much if any relevance to the sabbath is that there
is no relevance to the sabbath. They were meeting together on the first day of the week on all of those occasions
not to observe a sabbath day, but
to worship God and
to celebrate Christ's resurrection. That's what a worship service for non-sabbatarian Christians is all about! Maybe sabbatarians meet together only to corporately have a sabbath day and whatever that entails, but that's not what the rest of us are doing or at least the why of what we're doing. We meet because of all the stuff listed above and more. It's about honoring and glorifying God...worshiping him and honoring him. It doesn't even have to be on Sunday or any other day of the week and many congregations offer services on other days too. Nothing whatsoever to do with sabbath because Gentiles are not under the Sinai covenant that includes a ritual sabbath day and never have been.
You seem to want so much for the first day of the week to have no meaning that you have to creatively make it appear as if nothing significant happened on that day, but in reality, practically everything of significance in the new testament happened on that day.
If observing a sabbath was of primary importance, then not only would all the apostles, disciples, and even Jesus himself be proclaiming it throughout the gospels and letters, but all the significant events pertaining to Christians (as distinguished from Jews) would have also happened on the sabbath, but that's not the case. The sabbath is the sabbath and was specifically for the Israelites at Sinai and their descendants, and "The Way" noted the first day of the week as Christ Jesus, God himself in the flesh, was resurrected that day, and it was his resurrection that changed everything. Without the resurrection, absolutely none of it would matter because we would all be condemned no matter how many laws and sabbath days we diligently followed.