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.

Why have all been reckoned under sin?
Through whom is this reconciliation made?
Why must justifying faith lay hold upon both the death and the resurrection of Christ?
At His ascension, how did the angels say Christ would come again?
How does Isaiah speak of the wicked at this time?
Is there danger of believers losing their hold on Christ?
To what place did Jesus retire for secret devotion?

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