Surah Al-Qalam 68:33

كَذَٰلِكَ ٱلْعَذَابُ ۖ وَلَعَذَابُ ٱلْـَٔاخِرَةِ أَكْبَرُ ۚ لَوْ كَانُوا۟ يَعْلَمُونَ

Such is the punishment [of this world]. And the punishment of the Hereafter is greater, if they only knew.

Translation: Saheeh International

Tafsir

Such that is to say like the chastisement for these people will be the chastisement for those disbelievers of Mecca and others who contravene Our command; and the chastisement of the Hereafter is assuredly greater did they but know its chastisement they would not have contavened Our command. …

Excerpt from Tafsir al-Jalalayn, commentary on 68:33, via Quran.com. The reader has the full commentary and 9 more tafsirs.