﴿يَوْمَ يَأْتِ لَا تَكَلَّمُ نَفْسٌ إِلَّا بِإِذْنِهِ﴾
When that Day comes, no soul will speak except by His permission. (Hūd 11:105)
The verse presents a general condition of that Day affecting all persons: speech takes place only by divine permission. This supplies the common framework before the later differentiation and allocation of destinies.
Gathering: All souls fall under the inclusive setting and its general rule.
This unity does not mean all have the same fate. It prepares for the following differentiation and partition.