As a matter of fact, if god created this world and he created the good and the bad it is obviously apparent and the existence of evil was created by the god himself. No question about it according the almost all the Semitic religions. So the stories and the past carries lessons and the lessons learned is described by the god to the human, through the prophets. they are the gospel and qura'n. The life and the struggle of this world is also evident and is as expected and accepted by every soul that is born in this world. Things we encounter is mainly because everything in this world is meant to perish and every creation of god is meant to be destructed. If it is not by its nature perish the attribute the creation carries only befit god. so the creation automatically become Godly.
So everything that has come and gone are creation of god. god alone will remain forever.
In return for the human kind (Representatives of god in this world, children of god, sons of god.) will be rewarded with an every lasting life (godly life) after life. For the good deed he will be dwelling in the paradise and for his mischief man will carry a life last long in hell.
Load Budda (One of the great philosophers who lived and died in this world) had gone through all these phases in his worldly life and at the end he accepted and lived a middle path for success.
Further, Understand that we all fall sick and get deceases not only because we are in the testing mode but also because of our own mischief.
Await they aught say that the angels should come unto them or thy Lord's command should come to pass - Even so did those before them. Allah wronged them not, but they did wrong themselves, So that the evils of what they did smote them, and that which they used to mock surrounded them.
Say: I ask of you no reward for this, save that whoso will may choose a way unto his Lord.
And Allah hath created the heavens and the earth with truth, and that every soul may be repaid what it hath earned. And they will not be wronged.
Lo! This is a Reminder. Let him who will, then, choose a way unto his Lord.
Nay, but verily it is an Admonishment, So let whosoever will pay heed to it,