The previous verse (178) answered the question about disbelievers as to why they, being the detested ones in the sight of Allah, are in possession of all sort of wealth, property and other means of luxurious living?

The present verse (179), in sharp contrast, removes the doubt about true believers as to why they, being the favoured servants of Allah, are tested with all sorts of hardships? Being favoured required that they should have been the ones living in comfort surrounded by its paraphernalia!

Commentary

The wisdom of making a believer distinct from a hypocrite through practical demonstration rather than through a revelation.

It has been said in this verse that Allah Almighty has His way of making a sincere believer distinct from a hypocrite through which He generates such situations of hardship as would expose the hypocrisy of the hypocrites practically. This distinction, though, could also be made by identifying hypocrites by name through a revelation. But, the later course was not taken because it would have not been wise. The whole range of wisdom behind what Allah does is known to Him alone. However, one wise consideration in the present context could be: If Muslims were told about a person being a hypocrite through revelation, they would have had no difficulty in dealing with them carefully, but this would have not provided them with a clearly demonstrated proof necessarily acceptable to the hypocrites - for, they would have still insisted: You are wrong. We are true Muslims.'

Contrary to this, the distinction was made practically. The introduction of hardship put the hypocrites to test in which they failed and ran away. Their hypocrisy was demonstrated and exposed practically and openly. Now they did not have the cheek to claim that they were true, sincere and believing Muslims.

The manner in which the hypocrites were exposed yielded yet another benefit for Muslims when their formal relationship was also severed with the hypocrites. Otherwise, maintaining a state of discord in the heart with a veneer of formal social dealing would have been equally harmful ethically.

The Unseen when communicated to anyone is no Knowledge of the Unseen as such

This verse tells us that Allah Almighty does not inform everyone about Unseen matters through the medium of revelation (Wahy). However, He does inform His chosen prophets in this manner. From this, let no one hasten to doubt that prophets too have become sharers in the Knowledge of the Unseen or the knower, of the Unseen! The reason is that the Knowledge of the Unseen which is particularly attributed to the being of Allah Almighty cannot be taken as being shared by any created being. Doing so is Shirk (the crime of ascribing partners to Allah). The particular Knowledge is fortified by two conditions:

1. This should be intrinsic to the being, not given by anyone else.

2. This has to be all-comprehensive, encompassing all universes, the past and the future - a Knowledge that covers even the minutest particle without any possibility of anything remaining hidden from it. As for things of the Unseen the information of which is given to His prophets by Allah Almighty through the medium of revelation (Wahy), they are not, really, the Knowledge of the Unseen as such. They are, rather, news of the Unseen given to prophets, something about which the Holy Qur'an it self has used the expression أَنبَاءِ الْغَيْبِ (news or reports of the Unseen) at several places :

مِنْ أَنبَاءِ الْغَيْبِ نُوحِيهَا إِلَيْكَ

... a part of the news of the Unseen We reveal to you. (11:49)