Word by Word Analysis

أَمْ حَسِبَ ٱلَّذِينَ ٱجْتَرَحُوا۟ ٱلسَّيِّـَٔاتِ أَن نَّجْعَلَهُمْ كَٱلَّذِينَ ءَامَنُوا۟ وَعَمِلُوا۟ ٱلصَّـٰلِحَـٰتِ سَوَآءً مَّحْيَاهُمْ وَمَمَاتُهُمْ ۚ سَآءَ مَا يَحْكُمُونَ 21

Or do those who commit evils think We will make them like those who have believed and done righteous deeds - [make them] equal in their life and their death? Evil is that which they judge [i.e., assume].