By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What effect did the preaching of the Apostle Paul have upon the Gentiles?
What will result if correction is withheld?
What did Christ say would he the result if the days of persecution were not shortened?
How does the Sunday law of Charles 11, of 1676, read?
At His ascension, what assurance was given of Christs return ?
What was to follow the great earthquake?
How did Christ, from the Old Testament Scriptures, prove the resurrection?

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