Tafsir of Al-Mu'minoon 23:80

وهو الذي يحيي ويميت

And it is He Who gives life and causes death, meaning, He will bring the scattered bones back to life and cause the death of the nations,

وله اختﻼف الليل والنهار

and His is the alternation of night and day. meaning, by His command night and day are subjugated, each of them following the other and never departing from that pattern, as Allah says:

ﻻ الشمس ينبغى لها أن تدرك القمر وﻻ اليل سابق النهار

It is not for the sun to overtake the moon, nor does the night outstrip the day. (36:40)

أفﻼ تعقلون

Will you not then understand! means, do you not have minds that tell you of the Almighty, All-Knowing to Whom all things are subjugated, Who has power over all things and to Whom all things submit! The Idolators thought that Resurrection after Death was very unlikely Then Allah tells us about those who denied the resurrection, who were like the disbelievers who came before them:

بل قالوا مثل ما قال اﻻولون