وَلَوْ جَعَلْنَٰهُ مَلَكًا لَّجَعَلْنَٰهُ رَجُلًا وَلَلَبَسْنَا عَلَيْهِم مَّا يَلْبِسُونَ
Commentary:
Another possible form of the appearance of an angel is that he be sent to this world as a Messenger. But this could not improve things; for in that case, to make his mission to mankind worth anything, he should appear in the form of a man; but if he were to appear to them in the form of a man, then the people would entertain the same doubts about
his heavenly mission as they were now doing about that of the Holy Prophet.
The verse exposes the folly of the disbelievers’ demand that an angel should have come to guide them.