God has already kept everything inside a human being. 
The Quran says: "But the Quran is a revelation that is clear to the hearts of those endowed with knowledge." (29:49)
This means that the Quran is already present in the human heart. 
God has already given knowledge to a human being. We only need to make ourselves objective. We have to develop the ability to recognize our mistakes. We must learn the art of thinking. If a person thinks objectively, everything will begin to unfold upon him. This is a process of unfolding. Knowledge is a process of unfolding. That is, to unfold one's nature. One does not get anything from outside. Rather, nothing is present external to oneself. The entire universe exists in our mind. I once read a statement from a scientist. He said that the mind has as many particles as exist in the entire universe. This is indeed unthinkable. Here, by 'particle' is not meant something very tiny and visible, rather it is something invisible. God has given us tremendous capacity. We only need to unfold it. 
                            What do we need to do to bring about this unfolding? A prayer of the Prophet gives us guidance: Copy Arabic text
"O God, show us the truth as truth and guide us to follow it. Show us falsehood as falsehood and help us to refrain from it. Show us things as they are." (Tafsir Ibn Kathir, v. 1, p. 427)
A person must say this prayer to God and also build in himself a crucial ability. He must not see falsehood as truth nor truth as falsehood. One must see things as they are. When one develops this capacity, it initiates an unfolding process which will continue forever. You possess all the potential within yourself.