
“They spend their days in prosperity, And suddenly they down to Sheol” -Job 21:13
The Bible is a book of answers, and not a book of an ending puzzles. When Jesus’s disciples, asked why he spoke to the crowd in parables he answered.
“Because it is given unto you know the mystery of the kingdom of heaven, but to then it is not given” -Matthew 13:11
The inability to understand the things of God is not a religious attainment, but a sign of reparation. 
There is a conversation that Mark had with his mother in “God’s Not Dead” movie that explains why the evil prosper perfectly. That conversation went like this:
Mark:
You prayed and believed your whole life, never did anything wrong. And here you are. You are the nicest person I know. I am the meanest. You have dementia. My life is perfect. Explain that to me!
Marks Mother:
Sometimes the devil allows people who live a life, free of trouble because he doesn’t want them turning to God. Their sin is like a jail cell, except it is all nice and comfy, and there doesn’t seem to be any reason to leave. The doors wide open. Until one day, time runs out, and the cell door slams shut, and suddenly it’s too late.
The difference between the righteous and the wicked is that the wicked have their rewards now and it will be taken away from them. But the righteous wait for another reward as is yet to come -a reward that will endure into eternity.
The momentary suffering of the righteous in this world is the wages for an eternal life of joy.
The momentary luxury of the evil in this world is the cause of their destruction, the “wages” for their sin. The more wealthy and prosperous the evil, the more they will lose when they face judgment. In other words, the better off they are now in this world the greater their suffering will be upon judgment day. They are increasing their suffering by increasing their wealth.
It is more worthwhile to endure a temporary life of suffering and enjoy an eternity of joy and peace. Enjoying a temporary life of sinful luxury leads to suffering, eternal destruction.
