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?
To how many is the Lord good?
How many are affected by Adam's transgression ?
What will the truly repentant sinner he constrained to do ?
What is promised those who honor their father and their mother?
What warning has Christ given concerning false views of the manner of His coming?
Will even this terrible judgment lead men to repent?

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