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 does God manifest such mercy and long-suffering toward men?
What were some of the results of the preaching of the gospel under the outpouring of the Spirit?
Why was double manna given on the sixth day?
What does God say the Sabbath will be to those who hallow it, or keep it holy?
What is implied in a knowledge of God and Jesus Christ?
What is promised those who trust in Jesus?
What precious promise has God made to His children?

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