The revelation (wahy) is the communication of Allah to His prophets. In particular, the Qur'an is the unaltered word of Allah descended to His last Prophet Muhammad, peace and blessings be upon him and his family, as a reminder and a guidance for mankind. The word of Allah is very important for us because it is His message to His servants. Also, through revelation Allah gives His commands and prohibitions. Human intellect may understand general instructions (like the importance of prayer, the duty of respecting the elders, etc...) but it is not able to grasp all the particulars of the path leading human being to salvation. Therefore he needs a revelation. For example, the intellect cannot tell us the details about prayer, fasting, pilgrimage, etc. and we need the revelation to know them. The words of Allah are a continuous guidance for human beings: the recitation and memorization of the holy Qur'an guide the heart of believers towards awareness, piety, goodness, success in this world and Hereafter. Indeed there are too many benefits derived from the revelation of Allah, "and if you should count the favors of Allah, you could not enumerate them" (16:18).
With prayers for your success.