By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Can anything separate the true child of God from the love of God?
What testimony did Nicodemus bear concerning Him?
What great truth was then stated?
What is to take place in the days of these kingdoms?
How is the church at the first advent described?
In his dream at Bethel, what did Jacob see?
What did John the Baptist say to the Pharisees and Sadducees who came to his baptism?

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