Allah, the Exalted, has brought the Creation into existence for the purpose of worshiping Him. Proper worship depends mainly on the soundness of the Aqeedah of Tawheed, or the belief in the Oneness of Allah. Understanding the concept of Tawhid (Monotheism), on the other hand, helps the Muslim know his Rubb better, this knowledge makes him more conscious and fearful of Allah, and more hopeful of His Mercy.