The Cow - 2:108
Do you desire to make demands of your messenger as Moses was asked before? Whoever exchanges faith for disbelief has lost the right path.
Allah can send down a verse at any time:
The Poets/26:4
And if We willed, We could send down upon them a sign from the sky, and they would submit to it.
اِنْ نَشَأْ نُنَزِّلْ عَلَيْهِمْ مِنَ السَّمَٓاءِ اٰيَةً فَظَلَّتْ اَعْنَاقُهُمْ لَهَا خَاضِع۪ينَ
Prophet Jonah/10:99
Had your Lord willed, all those on the earth would have believed. Then will you force the people to believe?
وَلَوْ شَٓاءَ رَبُّكَ لَاٰمَنَ مَنْ فِي الْاَرْضِ كُلُّهُمْ جَم۪يعاًۜ اَفَاَنْتَ تُكْرِهُ النَّاسَ حَتّٰى يَكُونُوا مُؤْمِن۪ينَ