The One Wrapping Himself Up - 74:56
Unless Allah wills, they will not take admonition. It (the Qur´an) is the source of righteous behavior, the source of forgiveness.
No person can believe without Allah's permission:
The Heights/7:43
"We removed from their breasts hatred and jealousy, while rivers flowed beneath them: "Praise be to Allah who has guided us to this. We would not have found the truth had not Allah guided us to the truth, and the messengers of our Lord brought the truth". They said to themselves: "This Paradise is yours. You have inherited it in return for what you used to do."
The Cow/2:257
Allah is the sovereign and the friend of those who believe; He brings them out of darkness into light. But the friends of those who disbelieve are fierce men; they bring them out of light into darkness. They are the people of the Fire, they will abide therein forever.
The Cattle/6:125
Whomever Allah wishes to guide to the right path, He opens his heart to Islam (submission to God). And whomsoever He wills to lead astray, He makes his chest narrow and troubled as if he were ascending to heaven. This is how Allah puts those who do not believe in evil.
The Spoils of War/8:23
If Allah had seen that there was good in them, He would have made them hear. And even if He had made them hear, they would still have turned away.
The Cow/2:213
Mankind were a single community. Allah sent messengers as bearers of glad tidings and warners and sent down with them the Book containing the truth so that they might judge between the people in matters wherein they differed. But those who were given the Book disputed about it out of envy among themselves after clear proofs had come to them. But Allah, by His permission, brought the believers to the truth about which they differed. Allah guides whom He wills/whosoever He wills.
The Cow/2:272
It is not for you to guide them to the truth. But Allah guides whom He wills. Whatever good you do to the needy is for your own benefit. Your charity should be for Allah alone. Whatever good you do will be repaid to you in full. You will not be wronged.
The Cattle/6:111
And if We send down to them angels, and the dead speak to them, and We bring everything before them, they will not believe, except those whom Allah wills. But most of them do not know this truth.
Council/42:52
So We revealed to you a spirit from Our Presence, and you did not know what a book was and what faith was. But We have made it a light that guides the servants whom We will to the truth. Surely you are a guide to the right path.
The Cow/2:3
Those who believe in what they cannot perceive with their senses, and observe the prayer (salat), and give to the needy out of what We have provided for them.