By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Can anything separate the true child of God from the love of God?
What did Christ's words at Jacob's well lead the woman of Samaria to ask?
For what work was this baptism to prepare them?
Against what are husbands cautioned?
For what have we been taught to pray?
What event is closely associated with the establishment of God's everlasting kingdom?
What reason does Paul give to encourage us to entertain strangers?

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