By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Does it matter what one believes, so long as he is sincere?
Why did God confide in Abraham, and commit sacred trusts to him?
27. According to the view of the judgment presented to Daniel, what is to be given to Christ while still before the Father?
When did this long period expire?
When are the saints to he like Jesus?
What is set forth as the basis for hope and comfort?
How long was Jerusalem to be trodden down of the Gentiles?

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