Allāh the Most High has established Tawḥīd through the sending of his prophets and messengers for the purpose of guiding the people to his worship, and thereby gain them entry into Jannah.  From this, it is upon the Muslim to strive in the pursuit of knowledge and the understanding of the details of that knowledge. For the Muslim who strives in the path of knowledge there is a great reward as Allāh sees fit through his wisdom to raise the station of those who possess knowledge over the ones who do not have knowledge.