The theory of post-millennialism is dangerous.

...............It would have man and his works take the place of the work of God.

............This is the belief that man brings in the Millennium through his own efforts and gets his own happiness without the grace of God.

...............This interprets that the Church is to set its range until the whole world is converted, then bringings the millennium. But in reality the Church is far from accomplishmenting this than in the time of the Apostles.