There is no 8th day---check any calendar.
On the first day of the week in Acts 20:7 was a meeting on Saturday night, the First day of the week began (as all days did in Israel) at Sundown. That is why Sabbath starts sundown Fri. night. That was instituted by Jesus at creation week--- The disciples were meeting after Sundown, sat. night --it was not a Sunday morning worship service, it was a Sat. night meeting to say goodbye to Paul. There is no verse in the entire bible that states
GOD has changed the 7th day Sabbath to the 1st day of the week. As soon as you find that verse, you shut up all Sabbatarians. The 7th day Sabbath was instituted at creation week by Jesus Himself (He was the creator of all things, John 1) What God has instituted, not once but several times (creation week, then twice at Mt. Zion after Moses broke the 1st set of tablets)
What God has written with His own hand in stone no man has any right to change. You are free to think otherwise and go by what man has decided---I will not.
Sabbath keepers throughout history
scroll down to post of eight day.
7 + 1 = 8 which is just another way of saying the first day.
I posted many historical sources that demonstrates that the eight day was just another way the early church referred to the first day as the Lords Day.
Here are a few,
"Chapter 13
23. The Lord's day, however, has been made known not to the Jews, but to Christians, by the resurrection of the Lord, and from Him it began to have the festive character which is proper to it. For the souls of the pious dead are, indeed, in a state of repose before the resurrection of the body, but they are not engaged in the same active exercises as shall engage the strength of their bodies when restored. Now, of this condition of active exercise the
eighth day (which is also the first of the week) is a type, because it does not put an end to that repose, but glorifies it. For with the reunion of the body no hindrance of the soul's rest returns, because in the restored body there is no corruption: for this corruptible must put on incorruption, and this mortal must put on immortality. 1 Corinthians 15:53 Wherefore, although the sacramental import of the 8th number, as signifying the resurrection, was by no means concealed from the holy men of old who were filled with the spirit of prophecy (for in the title of Psalms [vi. and xii.] we find the words for the eighth, and infants were circumcised on the
eighth day; and in Ecclesiastes it is said, with allusion to the two covenants, Give a portion to seven, and also to eight ); nevertheless before the resurrection of the Lord, it was reserved and hidden, and the
sabbath alone was appointed to be observed, because before that event there was indeed the repose of the dead (of which the
sabbath rest was a type), but there was not any instance of the resurrection of one who, rising from the dead, was no more to die, and over whom death should no longer have dominion; this being done in order that, from the time when such a resurrection did take place in the Lord's own body (the Head of the Church being the first to experience that which His body, the Church, expects at the end of time), the day upon which He rose, the
eighth day namely (which is the same with the first of the week), should begin to be observed as the Lord's day. The same reason enables us to understand why, in regard to the day of keeping the passover, on which the Jews were commanded to kill and eat a lamb, which was most clearly a foreshadowing of the Lord's Passion, there was no injunction given to them that they should take the day of the week into account, waiting until the
sabbath was past, and making the beginning of the third week of the moon coincide with the beginning of the third week of the first month; the reason being, that the Lord might rather in His own Passion declare the significance of that day, as He had come also to declare the mystery of the day now known as the Lord's day, the eighth namely, which is also the first of the week. ... in order to connect its observance with the more sacred associations of this solemn season, and at the same time to prevent its being confounded with baptism in any way, have selected for this ceremony either the
eighth day itself, or that on which the third
eighth day occurs, because of the great significance of the number three in many holy mysteries."
CHURCH FATHERS: Letter 55 (St. Augustine)
(Cyprian of Carthage) > Epistle 58
"For because the
eighth day, that is, the
first day after the sabbath, was to be that on which the Lord should rise again, and should quicken us, and give us circumcision of the spirit, the eighth day, that is, the first day after the sabbath, and the Lord's day, went before in the figure; which figure ceased when by and by the truth came, and spiritual circumcision was given to us." CHURCH FATHERS: Epistle 58 (Cyprian of Carthage)
EPISTLE OF THE APOSTLES.- I [Christ] have come into being on the eighth day which is the day of the Lord.