Though indeed before it was sent down upon them before that min qablihi is repeated for emphasis they had been despondent despairing of its sending down.
- 30:4949
وَإِنْ كَانُوا مِنْ قَبْلِ أَنْ يُنَزَّلَ عَلَيْهِمْ مِنْ قَبْلِهِ لَمُبْلِسِينَ
Although before it came down they were despondent.
- common.revelation-Meccan
- common.hizb : 163