(6) Indeed, those who disbelieve - it is all the same for them whether you warn them or do not warn them - they will not believe.(7) 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.
(8) And of the people are some who say, "We believe in Allah and the Last Day," but they are not believers.(9) They [think to] deceive Allah and those who believe,
but they deceive not except themselves and perceive [it] not. .(10) In their hearts is disease, so Allah has increased their disease; and for them is a painful punishment because they [habitually] used to lie
[Al- Qur'an, Al-Baqarah 6-10]
