(Muhammed) 47 : 18
فَهَلْ يَنْظُرُونَ إِلَّا السَّاعَةَ أَنْ تَأْتِيَهُمْ بَغْتَةً ۖ فَقَدْ جَاءَ أَشْرَاطُهَا ۚ فَأَنَّىٰ لَهُمْ إِذَا جَاءَتْهُمْ ذِكْرَاهُمْ

Then what are they waiting except the Last Hour which will come to them all of a sudden, while surely its signal has come; then when it comes to them how can their remembrance benefit to them!

As explained in verses 29: 55-59, after getting Adhikr-the Best-in the hearts’ language, the disbelievers who do not utilize It now will be ready to believe, but it won’t benefit to them. As told in verse 89: 23, when the hell will be brought, the human will remember that how it was better if he had utilized Dhikra-Adhikr. It is told in verse 6: 158 that what are they waiting except for the Angels come to them or your Lord comes, or some of your Lord’s signs come? On the Day when some of your Lord’s signs come, belief in them will not benefit to any soul who has not believed in them before, or its belief has not earned any good; you Say: You wait, indeed we are also waiting. See explanation 21: 10; 41: 52-53; and 44: 13-14.