Word by Word Analysis

وَإِذَا جَآءَتْهُمْ ءَايَةٌ قَالُوا۟ لَن نُّؤْمِنَ حَتَّىٰ نُؤْتَىٰ مِثْلَ مَآ أُوتِىَ رُسُلُ ٱللَّهِ ۘ ٱللَّهُ أَعْلَمُ حَيْثُ يَجْعَلُ رِسَالَتَهُۥ ۗ سَيُصِيبُ ٱلَّذِينَ أَجْرَمُوا۟ صَغَارٌ عِندَ ٱللَّهِ وَعَذَابٌ شَدِيدٌۢ بِمَا كَانُوا۟ يَمْكُرُونَ 124

And when a sign comes to them, they say, "Never will we believe until we are given like that which was given to the messengers of Allāh." Allāh is most knowing of where [i.e., with whom] He places His message. There will afflict those who committed crimes debasement before Allāh and severe punishment for what they used to conspire.