By what authority was Sunday Sabbath-keeping instituted?

Answer

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

What does God's character preclude Him from doing?
When proclaiming His name to Moses, how did the Lord define His character?
What was required in order to effect this reconciliation?
What answer did he return when asked concerning his mission?
How freely was the Holy Spirit bestowed upon Him?
What message has God commissioned His ministers to bear to men?
19. Just before the pouring out of the plagues, what call does God send to His people still in Babylon?

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