"...the issue of sola Scriptura continued to aggravate the church in Rome, as it directly countered its claim of authority to interpret the Bible. The advent of the printing press had made the Bible and the writings of the Reformers readily available throughout Europe. Even some Roman priests thought that the Bible should have a more authoritative place in the church.
Finally the Council of Trent was called. Its many sessions were held over nearly 19 years. One of the issues that the Roman church wanted to counter was the Protestant principle of sola Scriptura. Thus, on January 18, 1562, Gaspar del Fosso, the archbishop of Reggio, presented the same argument that Eck had used against Luther.
He said, “The Protestants claim to stand upon the written word only. They profess to hold the Scripture alone as the standard point of faith. They justify their revolt by the plea that the church has apostatised from the written word and follows tradition. Now the Protestants’ claim that they stand upon the written word only is not true. Their profession of holding the Scripture alone as the standard of faith is false!”
His proof of this statement lay in the fact that the written word explicitly enjoins the observance of the seventh day as the Sabbath. However, Protestants did not observe the seventh day, as they should if they held the Scriptures alone as their standard. Instead, they rejected it.
Del Fosso went on to argue that “[Protestants] not only reject the observance of the Sabbath enjoined in the written word, but they have adopted and do practice the observance of Sunday, for which they have only the tradition of the church.”"
https://www.hopechannel.com/read/the-forgotten-reformer
Augsburg Confession of Faith art. 28; written by Melanchthon, approved by Martin Luther, 1530; as published in The Book of Concord of the Evangelical Lutheran Church Henry Jacobs, ed. (1 91 1), p. 63.
"They [Roman Catholics] refer to the Sabbath Day, a shaving been changed into the Lord's Day, contrary to the Decalogue, as it seems. Neither is there any example whereof they make more than concerning the changing of the Sabbath Day. Great, say they, is the power of the Church, since it has dispensed with one of the Ten Commandments!"
https://www.biblesabbath.org/confessions.html
