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.

5. After the healing of the blind man, upon what charge did some of the Pharisees seek to prove that Christ was not of God?
What tender, filial regard did Christ manifest for His mother in the hour of His death?
22. At the death of Christ, what miraculous occurrence signified that the priestly work and services of the earthly sanctuary were finished?
What do papal authorities say of the observance of Sunday by Protestants?
What will He say to those on His right hand?
12. What class of God's servants have evil angels, through wicked men, seemed to make special objects of attack?
What seasons of worship will be observed in the new earth?

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