Surah Al-Buruj, Verse 12

Tafsir of 85:12

The Reward of the Righteous, and the Harsh Seizing of the Disbelieving Enemies of Allah Allah informs about His believing servants that لَهُمْ جَنَّتٍ تَجْرِى مِن تَحْتِهَا الأَنْهَرُ (for them will be Gardens under which rivers flow.) This is the opposite of what he has prepared for His enemies of Fire and Hell. Thus, He says, ذَلِكَ الْفَوْزُ الْكَبِيرُ (That is the supreme success.) Then Allah says, إِنَّ بَطْشَ رَبِّكَ لَشَدِيدٌ (Verily, the punishment of your Lord is severe and painful.) meaning, indeed His punishment and His vengeance upon His enemies, who have rejected His Messengers, and opposed His command, is severe, great and strong. For verily, He is the Owner of power, Most Strong. He is the One that whatever He wants, then it will be however He wants it to be, in the matter of a blinking of an eye, or even swifter. Thus, Allah says, إِنَّهُ هُوَ يُبْدِىءُ وَيُعِيدُ (Verily, He it is Who begins and repeats.) meaning, from His perfect strength and power is that He begins the creation, and He repeats it just as He began it, without opposition or resistance.…

Source: Ibn Kathir (Abridged)