حَتَّى إِذَا مَا جَاوُوهَاTill, when they reach it,means, when they stand at its edge,شَهِدَ عَلَيْهِمْ سَمْعُهُمْ وَأَبْصَارُهُمْ وَجُلُودُهُمْبِمَا كَانُوا يَعْمَلُونَtheir hearing (ears) and their eyes and their skins will testify against them as to what they used to do.means, all their deeds, earlier and later; not a single letter will be concealed