18/Al-Kahf-54: And certainly We have explained in this Qur’ân every kind of matter (examples) to mankind. And mankind has ever been, most of anything, prone to dispute.
18/Al-Kahf-55: And what prevents men from believing when Hidayet comes to them (when they are invited to Hidayet), and from asking forgiveness from their Lord, is that what happened to the ancients did not overtake them, or that the torment did not come face to face with them.
18/Al-Kahf-56: We do not send Messengers except as givers of glad tidings and as Warners. Those who disbelieve (however) dispute with false argument, in order to refute the truth, and they take My Verses and that with which they are warned for a mockery.
18/Al-Kahf-57: Who is more unjust than he who is reminded of the Verses of his Lord, then he turns away from them and forgets what his two hands have sent before (his sins)? Surely We have placed a covering (Ekinnet) over their hearts lest they should understand it and a heaviness (that hinders from hearing) in their ears. If you call them to Hidayet, even then they will never attain Hidayet.
18/Al-Kahf-58: Your Lord is the Owner of Forgiveness and Mercy. Were He to question them, He would certainly have hastened the torment for them. No, for them there is an appointed time. They shall not find a refuge with other than Him (Allah).
18/Al-Kahf-59: And these countries (population), We destroyed them when they did wrong. And We appointed a fixed time for their destruction.
18/Al-Kahf-60: And Moses had said to his young company: “I will continue my way until I reach the junction of the two seas or I will go on for years (for a long time)”.
18/Al-Kahf-61: So when they had reached the junction of the two (seas) they both forgot their fish, and it took its way into the sea.