By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What is Christ's relation to this faith?
Through what does grace reign unto eternal life?
What is the duty of every child?
4. What explanation did Moses give the rulers of Israel concerning the withholding of the manna on the seventh day in the wilderness of Sin, before they reached Sinai?
What is the meaning of the word \"Sabbath\"?
For what purpose did Christ say God had anointed Him?
18. Lest the Gentile grafts should boast, saying that the Jews were broken off to let them come in, what warning is given them?

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