By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Into what experience are those baptized who are baptized into Christ?
How perfect is the unity into which believers are brought by being baptized into Christ?
What is the measure of the power of God which believers may experience in their daily lives?
What reward in this life is promised the faithful mother?
What was the result of this warfare by means of \"fire and smoke and brimstone\"?
What is God's final warning against false worship?
By what terms did Christ refer to the two resurrections?

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