By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What does God design that His Word shall be to us in this world of darkness, sin, and death?
Of what was Abraham's obedience the fruit?
What reply did Moses make to the rulers?
Did they observe it after His resurrection?
What did John say was to be the end of this beast?
What means will be employed to compel all to receive this mark?
What only can overcome the world?

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