By what authority was Sunday Sabbath-keeping instituted?

Answer

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

Whom did Jesus pronounce blessed?
Into what experience are those baptized who are baptized into Christ?
What answer did he return when asked concerning his mission?
What did Daniel ask of one of the heavenly attendants who stood by him in his dream?
25. When Christ has finished His priestly mediatorial work in the heavenly sanctuary, what decree will go forth?
Who is this dragon?
19. What testimony does Eusebius (AD. 270-338), a noted bishop of the church, a flatterer of Constantine, and the reputed father of ecclesiastical history, bear upon this subject?

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