Indeed, when We intend a thing, Our word to it will be: “Be!”, then it is.
It is told in verse 54: 50 that, the Lord doesn’t need even the time of twinkling of an eye to implement Doomsday and the Day of Judgment. It is told in verses 2: 117; 3: 47, 59; 6: 73; 16: 40; 19: 35; 36: 82 and 40: 68: “If the Lord Allah intends a thing, He commands it: ‘Be!’, then it is”.
Three-Time-Knower Lord has recorded in His Book Adhikr whatever happening in the universe. When the fixed term approaches, the Lord wants only to give the Permission “Be”. That is why it is told in verses 84: 1-4: “When the sky has been split and its Lord has permitted to happen so. And when the earth has been flattened and cast out whatever in it and become empty, and its Lord has permitted to happen so”. It is told in verse 20: 15: “Indeed, Lord concealed the time of Last Hour so that every soul may be recompensed according to what it earned”. The Arabic Quran reading Fujjar who prefer bodily and worldly life by hiding and rejecting Adhikr are seeing the Last Hour distantly, whereas the believers who testify Adhikr are seeing it near as told in verses 70: 6-7.
The 10 Crucial Signs of Doomsday explained in verse 6: 158 will not happen until the departure of the last forerunner to Paradise from this world. The believer glorifies the Lord Allah as: “Glory is the one Who if intends a thing, He commands to it ‘Be!’, then it is”. See explanation 3: 59; 4: 100 and 7: 187.