Another difference:
the Bible commands us to keep holy the Sabbath day. The Catholic teaching is to keep holy the first day of the week, Sunday, not the Sabbath day.
''I have repeatedly offered $1,000 to anyone who can prove to me from the Bible alone that I am bound to keep Sunday holy. There is no such law in the Bible. It is a law of the holy Catholic Church alone. The Bible says ‘Remember the Sabbath day to keep it holy.’ The Catholic Church says, No. By my divine power I abolish the Sabbath day and command you to keep holy the first day of the week. And lo! The entire civilized world bows down in reverent obedience to the command of the Holy Catholic Church." Priest Thomas Enright, C.S.S.R., February 18, 1884, Printed in the American Sentinel, a New York Roman Catholic journal in June 1893, p. 173.
The Convert’s Catechism of Catholic Doctrine:
"Question: Which is the Sabbath day?
Answer: Saturday is the Sabbath day.
Question: Why do we observe Sunday instead of Saturday?
Answer: We observe Sunday instead of Saturday because the Catholic Church transferred the solemnity from Saturday to Sunday.” -Rev. Peter Geiermann C.SS.R., The Convert’s Catechism of Catholic Doctrine, p. 50"
‘‘The [Roman Catholic] Church changed the observance of the Sabbath to Sunday by right of the divine, infallible authority given to her by her founder, Jesus Christ. The Protestant claiming the Bible to be the only guide of faith, has no warrant for observing Sunday. In this matter the Seventh-day Adventist is the only consistent Protestant.’’ The Catholic Universe Bulletin, August 14, 1942, p. 4.
“… you may read the Bible from Genesis to Revelation, and you will not find a single line authorizing the sanctification of Sunday. The Scriptures enforce the religious observance of Saturday, a day which we never sanctify.” The Faith of Our Fathers, by James Cardinal Gibbons, Archbishop of Baltimore, 88th edition, page 89. Originally published in 1876, republished and Copyright 1980 by TAN Books and Publishers, Inc., pages 72-73.
“If Protestants would follow the Bible, they would worship God on the Sabbath Day. In keeping the Sunday they are following a law of the Catholic Church.” Albert Smith, Chancellor of the Archdiocese of Baltimore, replying for the Cardinal, in a letter dated February 10, 1920.