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.

What, therefore, must he the character of His Word?
For what purpose did Christ come into the world?
Against what evil should fathers guard?
Where will Christ then take His people?
What was the song of Moses?
How had Moses spoken of another and greater dispersion?
For what purpose was the earth created?

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