What do Catholics say of the observance of Sunday by Protestants?

Answer

"It was the Catholic Church which, by the authority of Jesus Christ, has transferred this rest to the Sunday
in remembrance of the resurrection of our Lord. Thus the observance of Sunday by the Protestants is an
homage they pay, in spite of themselves, to the authority of the [Catholic] church. "-"Plain Talk About the
Protestantism of Today," by Mgr. Segur, page 213.

Who, therefore, did the speaking through these men?
16. How did Christ reprove those who, though familiar with the letter of the Scriptures, failed to understand them?
In what statement of the Scripture was Abraham's obedience really implied?
How does the Sunday law of Charles 11, of 1676, read?
For what purpose did Christ say He would come again?
What positive declaration does the apostle then make?
Who witnessed the laying of the foundations of the earth?

Questions & Answers are from the book Bible Readings for the Home Circle