Apostle Paul 

Gal 1:4 (NIV) who gave himself for our sins to rescue us from the present evil age (57AD...),

according to the will of our God and Father

N. T Wright Book How God became King

Millions of readers when they hear Matthew's Jesus talking about doing this or that

"so that you may enter the kingdom of heaven"

assume, without giving it a moment's thought, that this means

"so that you may go to heaven after you die." ...

The "kingdom of heaven" is not about people going to heaven.

It is about the rule of heaven coming to earth.