By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What treasures are hid in Christ?
What did the Lord command Abraham to do?
21. Although Pilate had declared his belief in Christ's innocence, yet what cruel punishment did he inflict upon Him?
What duty does God require of children?
What name is given to the third state of the church?
How does the Apostle Peter close his second epistle?
What above all else shows God's willingness to do this?

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