There is no scripture that commands Sunday observance
The commandment of God throughout the Old and New Testament is for keeping the seventh day of the week, which is Saturday. Sunday keeping did come into existence until after the apostles passed off the stage of history. Sunday Observance originated by the emperor Constantine in the fourth century. The keeping of Sunday today is based purely upon the traditions that passed down through the centuries from this unauthorized change of the Sabbath from Saturday to Sunday. Bible prophecy actually predicted such a change. Even the power that would attempt the change is identified in the scriptures in Daniel 7. https://bibleask.org/who-changed-the-sabbath-from-saturday-to-sunday-and-when/
The majority has always been on the wrong side
From the beginning of human history, it has consistently been the small minority who stood by the truth. In the days of Noah, there were only 8 people against all the rest of inhabitants (Genesis 7). Throughout the days of the Old Testament we find only a remnant who dared to be different enough to follow God’s true path. Jesus said, “Strait is the gate and narrow is the way that leadeth to life and few there be that find it” (Matthew 7:14).
Sin is the transgression of the law
In 1 John 3:4, we read that “Sin is the transgression of the law.” Paul makes it clear that the law spoken of here is none other than the Ten-Commandment law. He said, “I had not known sin except the Lord said, thou shalt not covet” (Romans 7:7). So, the breaking of God’s Ten Commandments constitutes sin.
And the fourth commandment clearly states that the seventh day is the Sabbath of the Lord. “Remember the sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates: For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it” (Exodus 20: 8-11).
James adds, “For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For he that said, do not commit adultery, said also, do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law” (James 2:10, 11).
Finally, we can say that the majority of people are keeping Sunday simply because they have accepted the tradition of their ancestors. They did that without any question and without investigating as to whether it is right or wrong. But the Lord says, “Why do ye also transgress the commandment of God by your tradition?” (Matthew 15:3).
In His service,