The Star - 53:57 The inevitable is near.
The end of the hour/world is an inevitable event:
The Kneeling/45:32 "When they were told that the Word of Allah is a truth and that the Hour is an inevitable event, you used to say: "We do not know what the Hour is, we only have various conjectures and we have no certain knowledge about it"."

The Star/53:58 None but Allah can lift it.

The Sure Truth/69:13 When the horn was blown once,
The Sure Truth/69:14 When the earth and the mountains are lifted up and crushed together and scattered,
The Sure Truth/69:15 On that Day the inevitable event took place.
The Sure Truth/69:16 The sky is split, torn asunder.
The Sure Truth/69:17 Angels are on every side. On that Day your Lord will rule over the eight (universe).
The Sure Truth/69:18 On that Day you will be revealed and nothing of yours will remain hidden.

The Family Of Imran/3:25 How will they be when We gather them together for the Day when everyone will be paid for what he has earned, without injustice, and there is no doubt about its realization?

The Women/4:87 Allah: There is no god but Him. He will gather you together on the Day of Resurrection, which is certain to take place. Who is more truthful than Allah?

The Cave/18:21 "So We made them find them (the people) so that they might know that the Word of Allah is true and that they might have no doubt about the Hour (the end of the world). When the people were discussing their condition among themselves, some of them said, "Build a building over them. Their Lord knows them better. Those who had the authority to decide their condition said, "We will build a mosque over them."

The Pilgrimage/22:7 And the end of the world is coming without a doubt, and Allah will raise up those in the graves.

Sheva/34:3 "The disbelievers said, "The Hour will never come."Say, "It will surely come to you by my Lord. He is the Knower of the future. Not an atom´s weight in the heavens and the earth is hidden from Him. Whether it is less than it or greater than it. It is all in a clear Book."
Sheva/34:29 "They challenge you, saying: "When will that promise be fulfilled if you are truthful?"
Sheva/34:30 "Say, "You have a day appointed for you which will not be an hour late or an hour early."

The Forgiver/40:59 The end of the world (the Hour) will surely come, let there be no doubt about that. But most of the people do not believe.

Council/42:18 Those who do not believe in it challenge about it. Those who believe in it are anxious about it and know that it is true. Those who doubt about the Hour are in great error.

The Ornaments of Gold/43:61 He (Jesus) is a source of knowledge and a sign about the Hour. So do not doubt about it (the Hour) and follow me. That is the right way.

The Kneeling/45:26 "Say: "Allah will raise you up and kill you. Then He will gather you together on the Day of Resurrection, of which there is no doubt. But most people do not know."

The Scatterers/51:5 What has been promised to you is certainly true.