Verse 24

فَإِن لَّمْ تَفْعَلُوا۟ وَلَن تَفْعَلُوا۟ فَٱتَّقُوا۟ ٱلنَّارَ ٱلَّتِى وَقُودُهَا ٱلنَّاسُ وَٱلْحِجَارَةُ أُعِدَّتْ لِلْكَـٰفِرِينَ

However, if you cannot achieve this and you will certainly not be able to, then you shall fear Hell whose fuel is people and rocks. This is what is promised to the unfaithful.