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 means is sin made known?
Through whom are repentance and forgiveness granted?
By his works what was shown to be perfect?
By what was the second kingdom symbolized?
Who was the seed here referred to?
Under what figure was the Christian church represented to the Apostle John?
When man lost his dominion, to whom did he yield it?

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