I roomed with a brother in my undergraduate days. He was of The Apostolic Church. As a rule, he never studied on Sundays. He lived out the tenet of his denomination to abstain from work on Sundays. If that brother was to be assessed by someone from The Seventh Day Adventist, he would still be judged wrong, though he never worked on Sundays. Someone from the latter denomination would insist that Saturdays are proper days of worship when no work should be done. That position is largely derived from our text which states that God worked for six days and rested on the seventh.
It is important to state upfront that worship in the New Testament is not so much about what day is adopted as doing it in spirit.
There are arguments back and forth regarding what day is best for worship. It is important to state upfront that worship in the New Testament is not so much about what day is adopted as doing it in spirit. Jesus said that God is Spirit and those who worship Him must do so in spirit and truth. What day we use for worship is of no consequence if this condition is not met. Secondly, it seems there was a shift from Saturday to Sunday as a day of worship, effective from the Lord’s resurrection. Acts 20:7 records that the first day of the week (Sunday) was when believers gathered to break bread. Also in 1 Corinthians 16:2, Paul recommended that believers should make their worship donations on the first day of the week. In general, we must come to the conclusion that in some matters of faith, God has given us a wide latitude for people to do according to their persuasion and that will not jeopardize anything. What one eats versus what another abstains from, what day one chooses as a day of worship and what another chooses to go about the normal business will fall into this category. It is in matters like this that we have to keep reminding ourselves of the Augustinian maxim: “In essentials, unity; in non-essentials, liberty; in all things, charity”.