Three scriptures lead some people to believe that Sunday was the day of
rest and worship for the New Testament Church. Let's briefly examine each
of them to see if this is true.
One scripture commonly cited to justify Sunday worship is Revelation 1:10,
where John said, "I was in the Spirit on the Lord's Day..." Some
believe this means John was worshiping on Sunday and had the vision on
that day. But nowhere does the Bible define "Lord's Day" as the
first day of the week. As a matter of fact, this is the only place this
term is used in the Bible, which would hardly be the case if the Church
had been observing Sunday for years, as some contend.
If this were referring to a day of the week, we would have to conclude
that John meant the seventh day, since Jesus Christ said He was the "Lord
of the Sabbath" (Mark 2:28), not some other day of the week.