﴿ وَلَقَدْ ءَاتَيْنَا مُوسَى ٱلْكِتَٰبَ وَجَعَلْنَا مَعَهُۥٓ أَخَاهُ هَٰرُونَ وَزِيرًۭا ﴾

“AND, INDEED, [long before Muhammad] We vouchsafed revelation unto Moses, and appointed his brother Aaron to help him to bear his burden;”

Commentary Verse no. 33 supports and accentuates the explanation given above for the wisdom in the gradual revelation of Qur'an in as much as it promises Allah's support in any situation of awkward questions asked by the infidel.