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 may we know that we are the sons of God?
In what other statement did He teach the same truth?
On what basis is there no possibility of justification for the sinner?
What will sound doctrine enable the faithful teacher to do?
What does the fifth commandment require of children?
What admonition is therefore given?
What complaint is made against Sunday trains and Sunday newspapers?

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