By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What precedes the manifestation of sin ?
What was the result of this great miracle?
By what means may the mother bind the hearts of the loved ones at home together?
What power was represented by the ram having two horns?
What provision has been made so that we may keep God's law?
When did Sin and death enter the world?
What has He commanded men to observe in memory of this great work?

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