By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Under what striking emblem was He prophesied of by Balaam?
How may we determine the truthfulness of any doctrine ?
What was done with the blood of the goat upon which the Lord's lot fell?
Was the judgment still future in Paul's day?
To whom does vengeance belong?
What unites all believers under the new covenant?
Is there any danger of God's chosen people forgetting Him?

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