the Qur'an as the ultimate miracle

فَلَوْلَآ أُلْقِىَ عَلَيْهِ أَسْوِرَةٌ مِّن ذَهَبٍ أَوْ جَآءَ مَعَهُ ٱلْمَلَـٰٓئِكَةُ مُقْتَرِنِينَ

Then why have there not been placed upon him bracelets of gold or come with him the angels in conjunction?"