Who will receive sweetness of Iman?

Prophet Muhammad (Peace and blessings of Allah be upon him) said :

 Whoever possesses the following three qualities will have the sweetness (delight) of Iman:

1. The one to whom Allah and His Prophet becomes dearer than anything else.

2. Who loves a person and he loves him only for Allah's sake.

3. Who hates to revert to Atheism (disbelief) as he hates to be thrown into the fire. (Al-Bukhari)