Why did God create people of different classes?

 

Answer:

Verse 53 of Chapter 6:

As a matter of fact, in this way We have made some of them a means for testing the others, so that, seeing them, they should say, "Are these the people from among us upon whom Allah has showered His blessings?" Yes: does not Allah know His grateful servants better than they?

Verse 165 of Chapter 6:

It is He, Who has made you the vicegerents on the earth, and raised some of you above others in ranks so that He may test you in what He has given you. Indeed your Lord is swift in inflicting punishment: yet He is also very Forgiving and Merciful.

Verse 28 of Chapter 8:
And know that your worldly goods and your children are, in fact, a test for you, and Allah has plenty for giving you reward.

Verse 55 of Chapter 9:
So let not their great wealth and the large number of their children delude you; for Allah wills to chastise them by means of these very things in this worldly life and that they would die in a state of unbelief.

Verse 27 of Chapter 42:

If Allah had given His provisions abundantly to all His servants, they would have rebelled in the earth, but He sends down in due measure what He wills. He is well informed of His servants and watches over them.

Verse 32 of Chapter 43:

Is it they who distribute the mercy of your Lord? It is We Who have distributed the means of their sustenance in the life of this world and raised some of them above others in ranks so that they may take one another in service. And your Lord's Mercy is far greater in worth than the wealth which (their chiefs) are amassing.