Just to say so, Acts 20:7 doesn't say that the disciples came together on the first day of the week because Paul was leaving. It says that when they came together on the first day of the week "to break bread," Paul came and preached. They didn't come for him. He took advantage of the opportunity of their gathering. This can be compared to Acts 2:42, where the breaking of bread was part of keeping the Apostles doctrine, confirmed in the Didache 14.1, Ignatius' Letter to the Magnesians 9, and the Epistle of Barnabas 15:8–9 as meaning communion, which took place on the first day of the week. There is also Justin Martyr, who says they worshiped on Sunday (1 Apol. 67). Paul tended to preach on the sabbath because that's when the Jews gathered at the synagogues.
I don't believe that the "sabbath" has changed. That's still Saturday. But Christians worship on Sunday because it commemorates the resurrection. And since Christians are not considered to be under the law of Moses, sabbath observance isn't required.
From ChatGPT that you love so much (once again, it's all in how you word your questions):
As it concerns Sunday worship amongst Christians going back to the foundation of the movement, does the Biblical evidence in your measured view support an early protocol for Sunday gathering or not? Some facts to consider are Acts 20:7 when the disciples came together on the first day of the week to break bread, which can be compared to the behavior of those shortly after Pentecost in Acts 2:42, the breaking of bread defined by Patristic writers within a hundred years as referring to communion (Didache 14.1, Ignatius' Letter to the Magnesians 9, and the Epistle of Barnabas 15:8–9), all of which, including Justin Martyr circa 145 CE, claiming that worship was on the first day of the week, when they sang hymns, broke bread (communion), and said prayers. I don't want a biased answer. Stick to the facts. I have no personal stake in the answer. I just want to know what you have to say on the matter.
Here is a deliberately
measured, source-controlled assessment, sticking as closely as possible to what the evidence can and cannot support.
1. What the New Testament explicitly attests
Acts 20:7
Facts:
- This is the only narrative text that explicitly places a Christian gathering for “breaking bread” on the first day of the week.
- The phrasing suggests intentional assembly, not a chance meal.
- “Breaking bread” in Luke–Acts is consistently cultic or semi-cultic in tone (Luke 24:30–35; Acts 2:42, 46), though it can include ordinary meals.
Limitations:
- It describes a practice, not the universal rule.
- It occurs in a Pauline, Gentile context (Troas), not Jerusalem.
Conclusion:
Acts 20:7 provides
positive but limited evidence that at least some churches gathered on Sunday for a communal rite understood as Eucharistic.
Acts 2:42–46
Facts:
- The language becomes formulaic very quickly (“the breaking of bread”).
- Occurs in Jerusalem, immediately after Pentecost.
- No weekday is specified.
Limitations:
- This passage cannot be used to establish Sunday practice.
- Early Jerusalem believers continued Temple attendance (Acts 2:46; 3:1), implying ongoing Sabbath observance.
Conclusion:
Acts 2 supports
structured worship and Eucharistic practice, but
not a calendrical shift.
1 Corinthians 16:2
Facts:
- Assumes a weekly rhythm tied to the first day.
- Often taken to imply assembly, though not explicitly stated.
Limitations:
- The instruction could be private saving rather than corporate worship.
- No mention of prayer, teaching, or Eucharist.
Conclusion:
Corroborative, but
inferential rather than decisive.
Revelation 1:10
Facts:
- “The Lord’s Day” (ἡ κυριακὴ ἡμέρα) becomes a technical term very early.
- By the early 2nd century it clearly refers to Sunday.
Limitations:
- Revelation does not define the term.
- Does not describe a gathering.
Conclusion:
Strong evidence of
Sunday’s symbolic importance, but not direct evidence of liturgical protocol.
2. Patristic evidence (within ~100 years)
Here the evidence becomes
clear and consistent, and this matters historically.
Didache 14.1 (late 1st / early 2nd c.)
Facts:
- Explicit command.
- Liturgical context.
- No polemic tone—suggests settled practice.
Ignatius, Magnesians 9 (c. 110 CE)
Facts:
- Acknowledges a conscious shift.
- Indicates differentiation from Jewish Sabbath practice.
Limitations:
- Reflects Asia Minor, not necessarily universal Christianity.
Epistle of Barnabas 15 (early 2nd c.)
Facts:
- Explicit theological justification for Sunday.
- Interprets Sabbath typologically.
Limitations:
- Allegorical and anti-Jewish in tone.
- Not representative of all Christian theology.
Justin Martyr, First Apology 67 (c. 145 CE)
Facts:
- Full description of Sunday worship: readings, prayers, Eucharist, collection.
- States it plainly as universal Christian practice.
Conclusion:
By the mid-2nd century,
Sunday worship is normative, explicit, and self-conscious.
3. What the evidence does not support
- There is no New Testament command abolishing Sabbath observance.
- There is no apostolic decree mandating Sunday worship.
- There is no evidence that all early Christians immediately abandoned Saturday.
Early Christianity shows
overlap, not instant replacement.
4. Synthesis (measured conclusion)
What can be responsibly said:
- The New Testament supports the existence of Sunday gatherings very early (Acts 20:7; Rev 1:10).
- These gatherings involved Eucharistic practice and likely teaching and prayer.
- Sunday was not initially framed as a “replacement Sabbath”, but as the day of resurrection.
- Jewish-Christian communities likely maintained Sabbath observance alongside Sunday gatherings for a time.
- By the early 2nd century, Sunday worship was sufficiently entrenched to be prescriptive and theologically explained.
- By the mid-2nd century, Sunday worship is universal and assumed.
Bottom line:
The biblical evidence
supports an early, apostolic-era practice of Sunday gathering, but
does not support an early, universal, or legislated protocol. That protocol emerges clearly and rapidly
after the apostolic period, not fully
within it.
That conclusion does not favor or undermine any later ecclesial position—it simply reflects the shape of the evidence as it stands.
If you’d like, I can also:
- Compare this with synagogue calendrical practices,
- Examine whether Sunday worship functioned in addition to Sabbath initially,
- Or assess whether Eucharistic language requires a formal assembly in Acts 20:7.
No need. You concluded pretty much what I had concluded myself. They gathered on Sundays, but not exclusively. In fact, Acts even says that they were in the temple "daily," so the temple had not been supplanted in their theological worldview. I think the evidence nevertheless implies that Sunday gathering and the breaking of bread (Eucharist) was present virtually from the beginning. That it is coupled with "And they continued stedfastly in the apostles’ doctrine and fellowship, and in breaking of bread, and in prayers," suggests to me that the breaking of bread was a formal protocol from the beginning as "apostles' doctrine." Your thoughts on that?
Your inference is a careful one, and—staying strictly with the evidence—it is a
defensible reading, though it has to be phrased with some precision.
Let me engage it point by point, because the nuance matters.
1. “The breaking of bread” as formal protocol
You are right to emphasize the
formulaic structure of Acts 2:42:
Several observations here are not speculative:
- The fourfold construction is deliberate
- Teaching
- Fellowship
- Breaking of bread
- Prayers
Luke presents these as defining practices, not incidental behaviors.
- “Breaking of bread” is grammatically parallel to “the prayers”
- “The prayers” (ταῖς προσευχαῖς) almost certainly refers to set or recognized prayers, not spontaneous devotion.
- That parallel strongly suggests that “the breaking of bread” is likewise a recognized rite, not merely eating together.
- Luke consistently uses the phrase with theological weight
- Luke 22:19
- Luke 24:30–35
- Acts 20:7
In Luke’s usage, the phrase is already Eucharistic by narrative association.
Conclusion:
It is entirely reasonable—on literary and linguistic grounds—to say that “the breaking of bread” in Acts 2:42 functions as a
formalized apostolic practice from the outset.
That is not reading later sacramental theology backward; it is observing Luke’s own pattern.
2. Does this qualify as “apostles’ doctrine”?
Here your formulation is careful, and it should remain so.
Luke does
not say that “the breaking of bread”
is the apostles’ doctrine.
But he does say it belongs to the
apostolic deposit—the lived tradition that accompanies the teaching.
This aligns very closely with what Paul later calls:
So while Eucharistic practice is not
doctrine in the narrow sense of propositional teaching, it
is apostolic tradition in the technical sense: a practice transmitted and guarded by the apostles themselves.
That distinction matters historically, and you’re respecting it.
3. The temple was not theologically supplanted (yet)
Your point about daily temple attendance is decisive and often ignored:
This shows:
- No early Christian belief that Eucharist = replacement of Temple sacrifice
- No early Christian abandonment of Jewish sacred space
- No zero-sum calendrical shift
Instead, the evidence points to
layered practice:
- Temple prayers and hours
- Household Eucharist
- Apostolic teaching
This makes sense of why:
- No NT text polemicizes against Sabbath observance
- No NT text frames Sunday as a “new Sabbath”
- That theological move only appears later (Barnabas, Justin)
4. Where Sunday fits into this from the beginning
Your claim is
modest but strong:
That is stronger than Acts 2 alone can prove—but
Acts 20:7 completes the picture.
When Luke later
explicitly dates a Eucharistic gathering to the first day of the week, he is not inventing a new practice; he is narrating a
known pattern.
Luke does not explain or justify Sunday gathering—he simply reports it.
That narrative silence is itself evidence of familiarity.
5. A carefully phrased conclusion
If I were to summarize your position in academically defensible terms, it would be something like this:
That strikes me as fully consistent with the sources—and with the restraint you’ve shown throughout this discussion.
If you want, next time we can also trace how
and why that layered practice became unsustainable after 70 CE and how that historical pressure—not apostolic decree—accelerated the transition to exclusive Sunday worship.