By what authority was Sunday Sabbath-keeping instituted?

Answer

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

In what language did Isaiah foretell Christ's birth?
How does Abraham's experience show that obedience and faith are inseparable?
After Pentecost, how was the gospel preached?
At the end of this time, what was to be done to Messiah?
What blessing does the Psalmist say attends the keeping of God's commandments?
What has the Pope commanded all Catholics to do?
What is the condition of one who lacks these graces?

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