In the life of this world, human beings are responsible for overcoming the impulses and appetites of their nafs (selves) and living their lives to please Allah. To do this we have been given a very short lifespan of sixty or seventy years on average. After the life of this world is over, Allah has created an endless and perfect life for His slaves who have won His favour. In comparison to that timeless existence, life in this world lasts only as long as the blink of an eye. The faithful slaves are those who have shown steadfastness and determination in living according to the genuine knowledge of the unity of Allah without association of partners to Him and in obedience to Allah and His Messenger. They will obtain a great reward in the world to come: the eternal life of the Garden. Doubtless the favour, mercy and love of our Lord for His slaves are a great joy for them.