Why might low comedy be considered suitable in a story of sorcery?

Sorcery is an idea that came about in the context of religion. You had early christians believing that the devil endowed some people with unholy powers. This sets the seen for a more dark and mystical topic and the use of comedy would seem out of place when dealing with something considered mysterious and satanic. That being said in this day and age sorcery is regarded as a myth like dragons and whatnot so its common to see light hearted stories involving "fun", "good" or "cool" sorcery like Harry Potter or wizards in Lord of the Rings...