Those are upon [right] guidance from their Lord, and it is those who are the successful. 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. And when it is said to them, "Do not cause corruption on the earth," they say, "We are but reformers." Unquestionably, it is they who are the corrupters, but they perceive [it] not. And when it is said to them, "Believe as the people have believed," they say, "Should we believe as the foolish have believed?" Unquestionably, it is they who are the foolish, but they know [it] not.