They lost what they were...
They lost what they were, initially, given from the ‘Eman [16] ’ (temporary Eman) due to attributing lies to Allah -azwj . As Allah -azwj Says, ‘See how they are contradicting the verdict of their souls’ Then Allah -azwj will seal their lips and enable their hands, feet and skin to give evidence of their sins. When Allah -azwj will remove the seal of their lips, they will complain to their limbs for giving evidence against them.
Their limbs will respond, ‘Allah -azwj enabled us to speak, He -azwj gives the power of speech to all entities’.
They will be gathered again at another point where no one else will have the authority to speak except for His Divine ‘Wali’ [17] and His favoured ones (78:38). All Prophets -as will stand-up and question their nations about the ‘Message’ which they had delivered to them (83:15). And their nations will be asked to explain their acts after having received the clear and unambiguous Divine message.
Thus, every nation will be told that, indeed, His -azwj informers and advice-givers were sent down to them and Allah -azwj has the absolute Authority, meaning that He has the authority to enable their limbs to speak out and give the evidence that His Prophets came down to them for the purpose of preaching (36:65).
That’s why Allah -azwj Says: فَكَيْفَ إِذَا جِئْنَا مِنْ كُلِّ أُمَّةٍ بِشَهِيدٍ وَجِئْنَا بِكَ عَلَى هَؤُلَاءِ شَهِيدًا (4:41) How would it be if, We were to bring a witness from every nation, and bring you as a witness against such people?