By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What is God declared to be?
What prophecy foretold Christ's triumph over death?
What solemn charge was given him concerning his public work?
In what literal language is this persecution of the people of God further described?
When He comes the second time, what title will He bear?
Who has the promise of being blessed in his doing?
How had Moses spoken of another and greater dispersion?

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