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 is proved by any attempt to be justified by the law?
What shameful treatment did Christ receive from the soldiers?
Who was the last Babylonian king?
How comprehensive are these commandments?
How was this covenant then confirmed and dedicated?
What was already at work in the church in Paul's day?
Where are the righteous to be recompensed?

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