By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What was indicated by the mixture of clay and iron in the feet and toes of the image?
What symbol was next introduced in the vision?
Why was double manna given on the sixth day?
After resting on the seventh day, what did God do?
What were to be the signs on earth of Christ's coming?
With what are we to comfort one another?
Are God's people free from affliction?

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