For what purpose is the mystery of the gospel made manifest?

Answer

But now [the mystery] is made manifest, and by the Scriptures of the prophets, according to the
commandment of the everlasting God, made known to all nations for the obedience of faith." Rom. 16: 26.

By what is this cleansing from sin and fitting for God's service accomplished?
What peaceful, happy conditions will prevail in the next world as compared with those of this life?
When this sign appeared, what were the disciples to do?
Is Christ coming again?
What does Christ proclaim Himself to be?
When praying what must we do in order to be forgiven?
Through whom is this first dominion to be restored?

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