By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What blessed assurance is given all believers in Christ?
What did Christ indicate as essential to eternal life?
Whose example are we urged to imitate?
5. After the healing of the blind man, upon what charge did some of the Pharisees seek to prove that Christ was not of God?
What instruction does the Apostle John give touching this subject?
Why is it better to go to the house of mourning than to the house of feasting?
What is God called in the Scriptures?

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