By what authority was Sunday Sabbath-keeping instituted?

Answer

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

How fully are we thus united with Christ in His experience of death and resurrection?
What assurance has the believer of his union with God?
What was the special message for Noah's day?
In what song of praise did a host of angels join?
Will the Sabbath be observed as a day of worship in the new earth?
10. Under what illustration from nature are the resurrection and the final salvation of the righteous taught?
What incentive have Christians for doing prison work?

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