وَمَا خَلَقْتُ الْجِنَّ وَاْلاِنْسَ اِلاَّ لِيَعْبُدُونِ
I created not jinn and mankind except that they might worship me. (Qur’an 51:56)
According to the meaning of this mighty verse, the purpose for the sending of man to this world and the wisdom implicit in it, consists of recognizing the Creator of all beings and believing in Him and worshipping Him. The primordial duty of man and the obligation incumbent upon him are to know Allah and believe in Him, to assent to His Being and unity in submission and perfect certainty.
For man, who by nature desires permanent life and immortal existence, whose unlimited hopes are matched by boundless afflictions, any object or accomplishment other than belief in Allah, knowledge of Allah and the means for attaining these, which are the fundament and key of eternal life — any such object or accomplishment must be regarded as lowly for man, or even worthless in many cases.
The Rays, Risale-i Nur Collection