How will the curse of the confusion of tongues be brought to an end?

Answer

"For then will I turn to the people a pure language, that they may all call upon the name of the Lord, to
serve Him with one consent." Zeph. 3: 9.

In what event was this prophecy fulfilled?
What indwelling Power keeps such from sinning?
Who alone went into the second apartment, how often, and for what purpose?
What is the whole world called upon to do?
Did they observe it after His resurrection?
What definite period is mentioned under this trumpet?
How does the Apostle Peter close his second epistle?

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