Lord's Day Sabbath - Is Sunday The Lord's Day?
But the Roman province of Asia, to which the Revelation applies, had no Sunday-Easter tradition, either at the time the Revelation was written or even a century later. Thus "Lord's day" in Revelation 1:10 couldn't discuss with an Easter Sunday.
Most pointedly of all, there may be neither prior nor up to date proof that Sunday had achieved in New Testament times a standing which would have caused it to be called "Lord's day." One other day - the seventh-day Sabbath - had been the Lord's holy day from antiquity (see Isaiah fifty eight:13) and was the day on which Christ Himself and His followers, including the Apostle Paul had attended spiritual services.
The Book of Acts reveals that the only day on which the Apostles repeatedly had been engaged in worship providers on a weekly foundation was Saturday, the seventh day of the week. The Apostle Paul and his company, when visiting Antioch in Pisidia, "went into the synagogue on the Sabbath day, and sat down." (Acts 13:14) After the Scripture reading, they were called upon to speak. They stayed in Antioch an extra week, and that "subsequent Sabbath day came virtually the entire city together to listen to the word of God." (Acts 13:44)
In Philippi, Paul and his company went out of the city by a riverside on the Sabbath day, to the place where prayer was typically made (Acts 16:thirteen). In Thessalonica, "as his manner was," Paul went to the synagogue and "three Sabbath days reasoned with them out of the scriptures." (Acts 17:2) And in Corinth, the place Paul resided for a year and a half, "he reasoned in the synagogue every Sabbath and persuaded the Jews and the Greeks" (Acts 18:four)
Thus the evidence within the Book of Acts multiplied relating to apostolic attendance at worship services on Saturday.
In sum total, there is not one piece of concrete proof anyplace in the New Testament that Sunday was considered as a weekly day of worship for Christians. Quite, Christ Himself, His followers at the time of His loss of life, and apostles after His resurrection usually attended providers on Saturday the seventh day of the week.