لَتَرْكَبُنَّ طَبَقًا عَنْ طَبَقٍ
You will assuredly pass from one state to another. (84:19)
This is the response to the preceding oaths. The initial lām and the emphatic final nūn reinforce the certainty of transition. “Ṭabaqan ʿan ṭabaq” expresses movement through successive states; restricting the verse to astronomical layers alone would flatten its widely recognized broader meaning.
The received readings include “la-tarkabunna” with plural address and “la-tarkabanna” with singular address, affecting interpretations of the addressee. The mode of recitation must therefore be considered when deciding precisely who is addressed. In both, the rhetorical movement between states remains.