Yet another article showing Sunday is from the RCC and not the bible.
Below is just a snippet of the article.
The Catholic Record, Sept. 1, 1923.
Now in the matter of Sabbath observance, the Protestant rule of Faith is utterly unable to explain the substitution of the Christian Sunday for the Jewish Saturday. It has been changed. The Bible still teaches that the Sabbath or Saturday should be kept holy. There is no authority in the New Testament for the substitution of Sunday for Saturday. Surely it is an important matter. It stands there in the Bible as one of the Ten Commandments of God. There is no authority in the Bible for abrogating this Commandment, or for transferring its observance to another day of the week.
For Catholics it is not the slightest difficulty. "All power is given Me in heaven and on earth; as the Father sent Me so I also send you," said our Divine Lord in giving His tremendous commission to His Apostles. "He that heareth you heareth Me." We have in the authoritative voice of the Church the voice of Christ Himself. The Church is above the Bible; and this transference of Sabbath observance from Saturday to Sunday is proof positive of that fact. Deny the authority of the Church and you have no adequate or reasonable explanation or justification for the substitution of Sunday for Saturday in the Third - Protestant Fourth - Commandment of God. As the Rev. Mr. Smith rightly points out: "The Jewish Sabbath is not Sunday, the Lord's Day. Christians are all wrong in speaking of the Sabbath as Sunday." The Christians who so speak are "Bible Christians," those who make the Bible the sole rule of Faith; and the Bible is silent on Sunday observance, it speaks only of Sabbath observance. The Lord's Day - Dies Dominica - is the term used always in the Missal and the Breviary. It occurs in the Bible once (Apoc. 1.10 in Acts xx. 7 and 1 Cor. xvi., 2 there is a reference to "the first day of the week;" but in none of these is there the remotest intimation that henceforth the first day is to take the place of the seventh. That is the crux of the whole question, what authority does the Bible give for the change? And that difficulty Mr. Smith and his critics, though pious and effusive and vaguely eloquent about many things, have each and all sedulously evaded.
If affects very materially and very intimately the question of the proper observance of the Lord's Day.
In the first centuries the obligation of rest from work remained somewhat indefinite. The Council of Laodicea, held at the end of the fourth century, was content to prescribe that on the Lord's Day the faithful were to abstain from work as far as possible. At the beginning of the sixth century St. Cesarius and others showed an inclination - very familiar to us - to apply the law of the Jewish Sabbath to the Christian Sunday. But the Council of Orleans in 538 reprobated this tendency as Jewish and non-Christian.
Thus by the same Divine authority, in virtue of which she did away with the Jewish Sabbath and substituted therefor the Christian Sunday, the Catholic Church legislated as to how the Lord's Day should be observed.>
Below is just a snippet of the article.
The Catholic Record, Sept. 1, 1923.
Now in the matter of Sabbath observance, the Protestant rule of Faith is utterly unable to explain the substitution of the Christian Sunday for the Jewish Saturday. It has been changed. The Bible still teaches that the Sabbath or Saturday should be kept holy. There is no authority in the New Testament for the substitution of Sunday for Saturday. Surely it is an important matter. It stands there in the Bible as one of the Ten Commandments of God. There is no authority in the Bible for abrogating this Commandment, or for transferring its observance to another day of the week.
For Catholics it is not the slightest difficulty. "All power is given Me in heaven and on earth; as the Father sent Me so I also send you," said our Divine Lord in giving His tremendous commission to His Apostles. "He that heareth you heareth Me." We have in the authoritative voice of the Church the voice of Christ Himself. The Church is above the Bible; and this transference of Sabbath observance from Saturday to Sunday is proof positive of that fact. Deny the authority of the Church and you have no adequate or reasonable explanation or justification for the substitution of Sunday for Saturday in the Third - Protestant Fourth - Commandment of God. As the Rev. Mr. Smith rightly points out: "The Jewish Sabbath is not Sunday, the Lord's Day. Christians are all wrong in speaking of the Sabbath as Sunday." The Christians who so speak are "Bible Christians," those who make the Bible the sole rule of Faith; and the Bible is silent on Sunday observance, it speaks only of Sabbath observance. The Lord's Day - Dies Dominica - is the term used always in the Missal and the Breviary. It occurs in the Bible once (Apoc. 1.10 in Acts xx. 7 and 1 Cor. xvi., 2 there is a reference to "the first day of the week;" but in none of these is there the remotest intimation that henceforth the first day is to take the place of the seventh. That is the crux of the whole question, what authority does the Bible give for the change? And that difficulty Mr. Smith and his critics, though pious and effusive and vaguely eloquent about many things, have each and all sedulously evaded.
If affects very materially and very intimately the question of the proper observance of the Lord's Day.
In the first centuries the obligation of rest from work remained somewhat indefinite. The Council of Laodicea, held at the end of the fourth century, was content to prescribe that on the Lord's Day the faithful were to abstain from work as far as possible. At the beginning of the sixth century St. Cesarius and others showed an inclination - very familiar to us - to apply the law of the Jewish Sabbath to the Christian Sunday. But the Council of Orleans in 538 reprobated this tendency as Jewish and non-Christian.
Thus by the same Divine authority, in virtue of which she did away with the Jewish Sabbath and substituted therefor the Christian Sunday, the Catholic Church legislated as to how the Lord's Day should be observed.>