These quotes from the Catholic church tell a different story on the change. They state there was no biblical authority to change the day of God's seventh day Sabbath and want you to know if you worship on Sunday it is a commandant of the Catholic Church, not God's commandment.
It is well to remind the Presbyterians, Baptists, Methodists, and all other Christians, that the Bible does not support them anywhere in their observance of
Sunday.
Sunday is an institution of the Roman Catholic Church, and those who observe the day observe a commandment of the Catholic Church.
—Priest Brady, in an address, reported in the Elizabeth, NJ ‘News’ on March 18, 1903.
Protestants ... accept
Sunday rather than Saturday as the day for public worship after the Catholic Church made the change... But the Protestant mind does not seem to realize that ... in observing
Sunday, they are accepting the authority of the spokesman for the Church, the pope.
—Our Sunday Visitor, February 5th, 1950.
A. Had she not such power, she could not have done that in which all modern religionists agree with her; —she could not have substituted the observance of Sunday the first day of the week, for the observance of Saturday the Seventh day, a change for which there is no Scriptural authority.
—Rev. Stephen Keenan, A Doctrinal Catechism; New York in 1857, page 174
There is no reference in the entire Bible that Jesus gave the Catholic church permission to change God's laws or anything for that matter. We are told God's covenant can not be broken and He changes not
Luke 16:17,
Psalms 89:34,
Psalms 111:7-8 Malachi 3:6. Jesus warned us and told us not to keep traditions of man, but only the commandments of God. Mathew 15:3-9 And we are not to change one Word.
Proverbs 30:5 If there was a change on God's Sabbath the scriptures were silent, but God already told us it is a perpetual covenant Exodus 31:16 which is why on the New Earth the seventh day Sabbath, not the first day will continue to be God's day of worship. Isaiah 66:23.
The pope is not above God. The Holy Spirit we are told is given to help us keep God's commandments, not break them. Acts 5:32, John 14:15-18
God bless