By what authority was Sunday Sabbath-keeping instituted?

Answer

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

In what other way is God's love sometimes shown?
In order to baptize the eunuch, where did Philip take him?
Does faith in God make void the law?
Where was the law of God written under the old covenant?
After the crucifixion, what day was kept by the women who followed Jesus?
Whom does Paul say the saints are to judge?
How is this great and dreadful day described in this same prophecy?

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