By what authority was Sunday Sabbath-keeping instituted?

Answer

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

For what purpose was Christ manifested?
What instruction shows that sanctification is a progressive work?
21. Although Pilate had declared his belief in Christ's innocence, yet what cruel punishment did he inflict upon Him?
How is unity preserved in the diversities of gifts?
How did Jesus honor His parents?
To whom is salvation promised at Christ's appearing?
What will finally he the privilege of God's children?

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