By what authority was Sunday Sabbath-keeping instituted?

Answer

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

How necessary is the experience of sanctification?
How did Christ suggest that His disciples follow His example in teaching gospel truth?
12. What universal boycott is to be employed, in an attempt to compel all to receive the mark of the beast?
What is Neander's conclusion regarding this theory?
What else has He promised to do?
How is the fifth trumpet, or first woe, introduced?
What warning has been given us through the Apostle Peter?

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