Comparison between worldly and eternal accountability

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.