By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Of what kind of doctrines should we beware?
How early does Paul say Timothy was instructed?
What is the nature of Gods law?
How was the flood stayed, and Satan's -design defeated?
What is said of those embraced in the first resurrection?
What were these locusts said to have over them?
When Christ sent out the seventy, what did He tell them to do in the cities whither they went?

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