﴿ ثُمَّ أَرْسَلْنَا مُوسَىٰ وَأَخَاهُ هَٰرُونَ بِـَٔايَٰتِنَا وَسُلْطَٰنٍۢ مُّبِينٍ ﴾

“AND THEN We sent forth Moses and his brother Aaron with Our messages and a manifest authority [from Us]”

They observed that the Prophet was not surrounded by heaps of wealth, nor was he seated upon a throne of power. So they considered him to be a lowly person. On account of their being worshippers of externals, they failed to fathom the Prophet’s inner greatness.