The reason of this issue is also clear...
The reason of this issue is also clear, because reward and retribution have no meaning unless the inner intentions and esoteric qualities are practically seen in man’s action. Trial is for proving the intrinsic intentions and qualities of a person to be true. In other words, this world is like a ‘university’ or a ‘farm’. In a university the talents open to blow, the competencies grow, and whatever is in the stage of potentiality reaches the stage of actuality.
In this farm the seeds must be planted. The shots and sprouts must come out of their inside. These sprouts come out from the land, grow to be some small plants, and finally become some tall fruitful trees. These things are not possible without experience and examination. By this course we understand that the Divine trials are not only for knowing persons, but they are for fostering the talents and that they are to open to blow.
Therefore, when we examine something, it is for finding out an unknown thing in it, but when Allah examines, it is not for finding out an unknown thing, because His knowledge encompasses everything, but it is for fostering the talents and causing the potentialities to reach to actualities.
The statement of the generality of trial for all nations and communities had a very considerable effect on the Muslims of Mecca, who were in a severe minority at that time, and attending to this fact made them steadfast and patient in front of the enemies of Islam. Yet, this was not allocated to the believers of Mecca, but every group and nation is somehow involved in this Allah’s way of treatment, and the trials of Allah come to meet them in different sorts.
Some people may be in some environments which are polluted from any point of view, and the temptations of making mischief surround them from all sides. Their great trial is that, in such an atmosphere and in such conditions, they do not tend to the pollutions of the environment and protect their own nobility and purity.
A group may involve in the pressure of deprivations, while they see that if they agree to exchange the capitals of their noble selves, their poverty and deprivation will quickly disappear, but this is for the price of losing their Faith, piety, freedom, nobility, and honour; and this very thing is their trial. On the contrary, another group may be enjoyed of affluence and different kinds of bounties when material possibilities can be at their reach.