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?
For whom did Christ suffer all these things?
How will such a mother he regarded?
Did Christ's followers keep the Sabbath after His death?
As He was about to leave the temple, what did He say?
33. In view of the fact that we do not know the exact time of Christ's coming, what important admonition has He given us?
Upon what condition does Christ say we shall receive?

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