Word by Word Analysis

وَكَذَٰلِكَ أَخْذُ رَبِّكَ إِذَآ أَخَذَ ٱلْقُرَىٰ وَهِىَ ظَـٰلِمَةٌ ۚ إِنَّ أَخْذَهُۥٓ أَلِيمٌ شَدِيدٌ 102

And thus is the seizure of your Lord when He seizes the cities while they are committing wrong. Indeed, His seizure is painful and severe.