In the Hindu text "Bhagavad-Gita," Vishnu was imploring the Prince to toil if only for the fact that toiling was the Prince's duty. As such, the Prince scoffed and Vishnu was forced to manifest itself into its multi-armed form saying, "Now I am become Death, the destroyer of worlds."
While one should never think to disagree with religious text
-- regardless of the mutual absence of empirical proof -- one could allow themselves to assume that Vishnu's form was not so much intimidating for his
multiple appendages, but for his striking resemblance to...