Do they distribute the mercy of your Fosterer? We distribute among them their livelihood in the life of this world; and We have elevated some of them over others in grades that some of them may take others in subjection (and extract work), and the mercy of your Fosterer is better than that which they amass.
It is Allah (SWT) Who elevates some people through wealth, status etc. so that they could extract work from others, if all were equal as pointed out later, life would have been impossible.