Ta-Ha
يَوْمَئِذٍ يَتَّبِعُونَ ٱلدَّاعِىَ لَا عِوَجَ لَهُۥ ۖ وَخَشَعَتِ ٱلْأَصْوَاتُ لِلرَّحْمَـٰنِ فَلَا تَسْمَعُ إِلَّا هَمْسًا
That Day, everyone will follow [the call of] the Caller [with] no deviation therefrom, and [all] voices will be stilled before the Most Merciful, so you will not hear except a whisper [of footsteps].
Nearby ayahs help place verse 20:108 in sequence and meaning.
فَيَذَرُهَا قَاعًا صَفْصَفًا
And He will leave the earth a level plain;
لَّا تَرَىٰ فِيهَا عِوَجًا وَلَآ أَمْتًا
You will not see therein a depression or an elevation."
يَوْمَئِذٍ لَّا تَنفَعُ ٱلشَّفَـٰعَةُ إِلَّا مَنْ أَذِنَ لَهُ ٱلرَّحْمَـٰنُ وَرَضِىَ لَهُۥ قَوْلًا
That Day, no intercession will benefit except [that of] one to whom the Most Merciful has given permission and has accepted his word.
يَعْلَمُ مَا بَيْنَ أَيْدِيهِمْ وَمَا خَلْفَهُمْ وَلَا يُحِيطُونَ بِهِۦ عِلْمًا
Allah knows what is [presently] before them and what will be after them, but they do not encompass it in knowledge.