It's Saturday, the original 7th day.
The Sunday thing was created by men who misinterpreted scripture, and over time laws were created about not working on Sundays, 'blue laws' not to sell liquor (should do that more often anyways), different store hours, most shops closed, etc etc, and of course most Church services except SDA, and a few others who worship on Saturday..
I am not SDA, but I also know God did not change the sabbath, and I also know Paul mentions in Romans 14:5
"One man esteemeth one day above another: another esteemeth every day alike. Let every man be fully persuaded in his own mind."
"Here in the second book attributed to Luke, written about 80 - 90 A.D., we now come to one of the most frequently quoted verses to support Sunday sacredness:
Acts 20:7 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.
Clearly the disciples are meeting on Sunday, the first day of the week. It might even be presumed by some that by "breaking bread" they celebrated the Lord's supper that Sunday. The question that needs to be asked though, is why were the disciples assembled on this day? What reason brought them together? In context, it will be seen that Paul was departing the next day on his journey to Jerusalem to be present during the Pentecost festival (v. 16). This gathering was a farewell assembly with Paul, the last day the people at Troas could meet with him, and that is why it lasted into the early morning hours. In fact Paul talked with them all through the night and then left in the morning at sunrise (v. 11).
Did Paul preach? Yes, without doubt, as verse 7 makes clear. Does that indicate the day was special, a holy day? No, they preached every day:
Acts 5:42 And daily in the temple, and in every house, they ceased not to teach and preach Jesus Christ.
Did they celebrate the Lord's supper? Perhaps, yet even if they did, as some maintain, there is no indication that that Sunday, or any Sunday, was being observed as a newly instituted weekly holy day to commemorate the resurrection. The breaking of bread did not indicate a special day of worship, or even that the Lord's supper was being celebrated, as scripture tells us they met daily and broke bread from house to house:
Acts 2:46 And they, continuing daily with one accord in the temple, and breaking bread from house to house, did eat their meat [food] with gladness and singleness of heart,
This indicates nothing more than eating what are called agape meals of fellowship, which are not necessarily connected with a formal worship service involving partaking in communion. Here is another example of breaking bread meaning a common meal:
Acts 27:33 And while the day was coming on, Paul besought them all to take meat [food], saying, This day is the fourteenth day that ye have tarried and continued fasting, having taken nothing.
Acts 27:34 Wherefore I pray you to take some meat [food]: for this is for your health: for there shall not an hair fall from the head of any of you.
Acts 27:35 And when he had thus spoken, he took bread, and gave thanks to God in presence of them all: and when he had broken it, he began to eat.
Now some will point to the celebration of Pentecost, found in Acts 2, and rightly claim that this occurred on a Sunday. Since that year the 16th of Nisan; the day of firstfruits; which was a type of the resurrection; fell on Sunday, Pentecost would also fall on Sunday. However, those gathered in the upper room on that day were gathered because it was Pentecost, not because it was Sunday:
Acts 2:1 And when the day of Pentecost was fully come, they were all with one accord in one place.
Had they been gathered to observe the resurrection, wouldn't Luke have told us that this was the new day of the week for all Christians to observe? But, you say, we
do observe Pentecost always on a Sunday (Whitsunday). Perhaps you do, but not by anything directed in scripture. Pentecost, like Passover, is not tied to any particular week day. It is determined by the day of the month of the biblical lunar calendar, which means it does not always fall on Sunday. According to the scriptural calculation, Pentecost will most likely be on (or about) the 6th day of the third month, Sivan, which will only occasionally fall on the first day of the week. When the Catholic Church ruled in the Council of Nicaea in 325 A.D. that the resurrection (Easter) would always be observed on a Sunday (instead of the biblical 16 Nisan), this automatically resulted in Pentecost being observed only on a Sunday, but this change lacks any biblical support.
So, there is nothing in the book of Acts that leads us to believe that Sunday had been set aside as a weekly holy day of worship to honor the resurrection.
Paul's First Letter to the Corinthians
Continuing on to the next book of the New Testament, which according to Catholic scholars was written between 52 and 57 A.D., we find what is probably the single most quoted text used in an effort to "prove" Sunday worship:
1 Cor 16:2 Upon the first day of the week let every one of you lay by him in store, as God hath prospered him, that there be no gatherings when I come.
Paul writes to the Corinthians that he is requesting money be saved for distribution to the needy saints in Jerusalem (v. 3). Paul is recommending that each person, on the first day of the week, lay aside and save by themselves a proportional amount of their income for the purpose of this offering. In that way, when Paul arrives the necessary funds will be already set aside and available.
1 Cor 16:3 And when I come, whomsoever ye shall approve by your letters, them will I send to bring your liberality unto Jerusalem.
1 Cor 16:4 And if it be meet that I go also, they shall go with me.
Upon meeting with Paul after his arrival at Corinth, the money that had been saved up would be given to the designated courier and taken to Jerusalem by Paul's direction. Most notably, Paul is not instructing the Corinthians to observe Sunday, or even implying that funds are to be collected at a Sunday worship service. He is saying that on the first day of the week each person is to allocate and set aside at home (lay by him in store) a portion of their funds. There is no indication that the individual needed to leave home or go anywhere to do this.
It is also clear from the book of Acts, that Paul kept only the Sabbath day in Corinth, and not Sunday:
Acts 18:1 After these things Paul departed from Athens, and came to Corinth;
Acts 18:4 And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.
Acts 18:11 And he continued there a year and six months, teaching the word of God among them.
That's 72 Sabbaths that Paul preached in Corinth. There can be no question that Paul raised up a Sabbath keeping church in Corinth, a church that knew
nothing of observing Sunday as a holy day. So, while many will point to 1 Corinthians 16:2 in the light of Tradition, and say that it refers to passing the collection plate during a
Sundayservice, in context, that is simply
not indicated by the text.
That completes the entire testimony of the scriptures on the first day of the week. Note that not once in the Gospels, or indeed the whole of the New Testament, did Jesus Christ even
mention the first day of the week, much less declare it the new day of rest to replace the Saturday Sabbath. And not once, according to the New Testament, were the Apostles gathered together in worship on a Sunday for the declared purpose of honoring the resurrection."
http://biblelight.net/firstday.htm
Can someone (or people) help me understand how to apply the Sabbath day in today's busy world? And on which day of the week is it? Saturday or Sunday? I really want to understand this concept and very important commandment but I do not know how we are supposed to have an ENTIRE day of "rest" (and personal time with God?) when we will probably most definitely be required to do some sort of "work". :/
