Word by Word Analysis

وَكَذَّبَ ٱلَّذِينَ مِن قَبْلِهِمْ وَمَا بَلَغُوا۟ مِعْشَارَ مَآ ءَاتَيْنَـٰهُمْ فَكَذَّبُوا۟ رُسُلِى ۖ فَكَيْفَ كَانَ نَكِيرِ 45

And those before them denied, and they [i.e., the people of Makkah] have not attained a tenth of what We had given them. But they [i.e., the former peoples] denied My messengers, so how [terrible] was My reproach.