Quran Chapter 2 Verse 6-10
Indeed, those who disbelieve – it is all the same for them whether you warn them or do not warn them – they will not believe.
Allah has set a seal upon their hearts and upon their hearing, and over their vision is a veil. And for them is a great punishment.
And of the people are some who say, “We believe in Allah and the Last Day,” but they are not believers.
They [think to] deceive Allah and those who believe, but they deceive not except themselves and perceive [it] not.
In their hearts is disease, so Allah has increased their disease; and for them is a painful punishment because they [habitually] used to lie.