christians were worshipping on sundays by the end of the first century AD...long before the roman catholic church was even a thing...
It is true that there are records that people had begun to keep Sunday very early. There is however no actual bible evidence of this. So we know for a fact that it was not taught from Scripture.
The records of people keeping Sunday come after the time of the Apostles and thus are totally disconnected from scriptural Doctrine.
It is also common knowledge that Paganism and its teachings began to come into the church. Even Paul warned of this when he said:
Act 20:28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
Act 20:29 For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
Act 20:30 Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
Paul also warned:
2Th 2:3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;
2Th 2:4 Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.
2Th 2:5 Remember ye not, that, when I was yet with you, I told you these things?
2Th 2:6 And now ye know what withholdeth that he might be revealed in his time.
2Th 2:7 For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.
This power wold oppose God and in fact was already at work in Paul's time.
It is also agreed that the Papal roots run down to at least the second century.
The Church Historian Philip Schaff said, "The first example of the exercise of a sort of papal authority is found towards the close of the first century in the letter of the Roman bishop Clement (d.102) to the bereaved and distracted church of Corinth." History of the Christian Church (8th ed., 1903), vol. 2, p. 157.
He goes on,
"He (Clement) speaks in a tone of authority to a sister church of apostolic foundation, and thus reveals the easy and as yet innocent beginning of the Papacy." p.646.
Paul died a martyr in Rome around A.D 68. Clement, bishop of Rome, was a disciple of Paul and died A.D 102. Schaff describes it this way. "the interval between Clement and Paul" as a "transition from the apostolic to the apocryphal, from faith to superstition"
Yet of the so called Fathers who lived in the two centuries immediately following the apostles Schaff says:
"We seek in vain among them for the evangelical doctrines of the exclusive authority of the scriptures, Justification by faith alone, the universal priesthood of the laity; and we find instead as early as the second century a high estimate of ecclesiastical traditions, meritorious and even overmeritorious works, and strong sacerdotal, sacramentarian, ritualistic, and ascetic tendencies, which gradually matured in the Greek and Roman types of Catholicity. p. 628
So I ask does it make sense that a person who claims to take their doctrine form the word of God would then quote Men who accepted tradition and false teachings. and use them as their proof that the Sabbath had been changed? Should this be ok in light that Paul warned of the lies and false teachings that were already starting to creep in?
The reality is that what the church Fathers say concerning Sabbath provides no help or direction to the question. They are unreliable at best. Plus it is only scripture that gives us truth.
It is also clear that way back to these early days are the roots of the Papal Church which was the inevitable result of the traditions and paganism being accepted into Christianity at the demise of the apostles.
There is evidence in history also of 7th Day Sabbath keeping. The difference is that this evidence lines up with what the bible says. The church fathers line up with tradition and paganistic influence.
It was much later that Constantine played His part in paving the way for Sunday enforcement and persecution of those who kept the bible Sabbath.
