By what authority was Sunday Sabbath-keeping instituted?

Answer

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

31. What scripture shows that the righteousness which is received by grace through faith must not be made an excuse for continuing in sin?
11. How did the Jewish leaders in the days of Christ, for the sake of gain, make void the fifth commandment?
How many lawgivers are there?
16. What striking testimony is borne by Neander, the noted church historian, regarding the origin of the Sunday Sabbath?
When and by whom was the Council of Nice convened?
What is Peter's testimony regarding it?
12. When Daniel and his fellows were about to be slain because the wise men of Babylon could not reveal to Nebuchadnezzar his dream, how did God answer their united prayers?

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