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 does Christ declare Himself to be?
To what knowledge would God have all men come?
How many were saved in the ark?
What Christian ordinance has been given as a memorial of Christ's burial and resurrection?
Who gives this rest from sin?
What was decreed by the Council of Laodicea, in AD. 364?
How enduring is this kingdom to be?

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