By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Where in the Bible do we find the first prom Redeemer?
Who are called to repentance?
What is the only unpardonable sin?
What were some of the results of the preaching of the gospel under the outpouring of the Spirit?
Why should husbands be considerate of their wives?
Where are the Ten Commandments recorded?
After accepting Christ, what are we to do?

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