The Second Coming of Jesus Christ
Paul refers to it in as the "Dispensation of Grace" in Ephesians 3:2.
God is giving blessing where blessing is undeserved.
He is exercising patience when patience is not warranted.
And He is offering pardon and peace to men and women who deserve judgement.
God is offering heaven to a race which deserves hell...
There is a blessing mentioned in Revelation for looking into this and other mysteries of that book. But such an inquiry involves preparing one's heart for what is inevitably coming.