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.

How was He treated?
Why did John write his testimony concerning God's love and purpose in giving Christ?
What are the commandments of God declared to be?
Why did the Lord destroy Sodom?
What did Christ nail to His cross?
What do Catholics say of the observance of Sunday by Protestants?
For what purpose did God give His Son to the world?

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