By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What was contained in the second apartment?
3. Before the giving of the law at Sinai, what did Moses say when Jethro asked him concerning his judging the people?
Through what is the knowledge of sin obtained?
Where is the law of God written under the new covenant?
Through whom did God create the world?
How does Paul give expression to this hope?
In what is the wrath of God filled up?

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