By what authority was Sunday Sabbath-keeping instituted?

Answer

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

How completely does God wish to separate sin from us?
What followed immediately after the gaoler and his family had accepted Christ as their Saviour?
How is justification laid hold upon?
What does he find who follows after righteousness?
What reason did they give for not receiving Him?
Who does the apostle say saw Christ after He was risen?
What will be the experience of those who say in their hearts that the Lord is not soon coming?

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