The Poor or The Unhappy would Be Blessed in the Spirit World
The Gospels were written based on the notion that there are spirits and souls in men which would enter into the spirit world, which means that there is life after death.
If rich and happy men in this world hear these words in the Gospels, they might simply try to continue their happy living in an afterlife. They will not change their ways of living, neglecting poor and unhappy people. They will continue not to love the poor, the suffering, and the abused. And when the poor hear these words in the Gospels, they might be afraid that their unhappiness continues even in an afterlife.
But, Christ Jesus clearly said that the poor and the unhappy during living in this world should be warmly accepted in the afterlife and be accordingly led to Heaven. And, the rich, the cruel, or the evil in this world should be condemned to the hell in the afterlife to be permanently destroyed by the God, since they have sold their souls to Satan.
In this context, the words of Christ Jesus is really good news for the poor and the unhappy.
However, some spirit mediums or those who claim that they have spiritual power often tell that they can see spirits of dead men living happily in an afterlife, regardless of whether they were poor or rich during living in this world. It is as if they claimed that everybody could live happily in life after death, which however does not match the words of Christ Jesus.
Satan should not mind if men come to realize that there is life after death, as long as men sell their souls to Satan to be rich and happy. Those rich and happy men should just want to be rich and happy in their living in the spirit world. And they would be satisfied by hearing those spirit mediums and men with spiritual power assuring their happiness in life after death in the spirit world.
Put simply, Christ Jesus said that the poor or the unhappy would become blessed in the spirit world after death but the rich or the evil should face the second death in the hell in the spirit world after death in this world.
John 7, King James Version
6 Then Jesus said unto them, My time is not yet come: but your time is alway ready.
7 The world cannot hate you; but me it hateth, because I testify of it, that the works thereof are evil.
8 Go ye up unto this feast: I go not up yet unto this feast: for my time is not yet full come.