The Cow - 2:10
They have sickness in their hearts. Allah increases their sickness. They deserve a painful torment for their lies.
Why and how does Allah increase their illnesses?
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 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.
The Women/4:155
"Allah sealed their understanding because of their breaking their word, because they disbelieved in the signs and proofs of Allah, because they killed the prophets unjustly, and because they said: "We are fixed-minded", yes, because of their disbelief. Therefore few of them believe."
The Ornaments of Gold/43:36
And whoever disregards the message of the Most Merciful, We will cause a devil to take hold of him and he will be his companion.
The Ornaments of Gold/43:37
Indeed they lead them astray. Yet they think that they are on the right path.