Contingency of Revelation

وَلَئِن شِئْنَا لَنَذْهَبَنَّ بِٱلَّذِىٓ أَوْحَيْنَآ إِلَيْكَ ثُمَّ لَا تَجِدُ لَكَ بِهِۦ عَلَيْنَا وَكِيلًا

And if We willed, We could surely do away with that which We revealed to you. Then you would not find for yourself concerning it an advocate against Us.