The Companies - 39:18 Those who listen to the Word and follow the best of it. They are those whom Allah guides. They are the owners of wisdom
Whom does Allah not guide?
The Bee/16:104 Those who do not believe in the signs of Allah, Allah will not guide them; for them is a painful torment.

The Family Of Imran/3:86 How can Allah guide a people who disbelieve after they have believed and witnessed that the messenger is true and clear proofs have come to them? Allah does not guide the unjust people.

The Women/4:115 Whoever disobeys the messenger after the right way has become clear to him and takes a way other than the way of the believers, We will turn him in the direction he chose and We will cast him into Hell. What an evil place of return.

The Table Spread/5:49 You should judge between them by what Allah has revealed. Do not follow their pleasure. And let them not mislead you from some of what Allah has revealed to you. If they turn away, it means that Allah wants to punish them for some of their sins. Indeed most of the people have gone astray.

The Cattle/6:35 If their turning away is too much for you, know that even if you had the power to make a hole in the earth or a ladder in the sky, it would not profit you if you presented a miracle. Had Allah willed, He would have guided them. So do not be among the ignorant.
The Cattle/6:110 We turn away their understanding and their eyes and leave them floundering in their rebellion because they decided not to believe at first.
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.

Prophet Jonah/10:43 Among them are those who look at you; will you guide the blind who have no sight?
Prophet Jonah/10:96 Those who are condemned by the decision of their Lord do not believe.
Prophet Jonah/10:97 Even if all kinds of miracles come to them, they will not believe until they see the painful torment.

The Ants/27:81 Nor can you guide the blind out of their error. You can make it known only to those who believe in Our Verses; they accept (Your Call).

The Kneeling/45:23 Have you paid attention to him who takes his desire as a god? Allah has deliberately led him astray, and has sealed his hearing and his brain and put a veil over his sight. Who can guide him to the truth except Allah? Do you not take admonition?

The Hypocrites/63:3 Because they disbelieved after they believed, so their hearts were sealed; they do not understand.

The Bee/16:9 It belongs to Allah to show the paths; some of them are crooked. Had He willed, He would have guided you all to the truth.