By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What experience in the life of a noted prophet indicated the length of Christ's stay in the grave?
Why have all been reckoned under sin?
What other experience is associated with conversion?
Did God's chosen people receive Christ when He came?
What does Christ as the advocate of His people confess before the Father and His angels?
How must one ask in order to receive?
What seasons of worship will be observed in the new earth?

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