By what authority was Sunday Sabbath-keeping instituted?

Answer

By the authority of the Catholic Church. See page 131.

How is the fulfilment of this prophecy recorded?
How many may receive this gift?
What is the result of godly sorrow?
What was the special message for Noah's day?
What system was established on account of man's transgression of the law of God?
To what did the ordinances pertain that were thus abolished?
Do they take any part in earthly things?

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