The Romans - 30:24
And of His signs is that He shows you lightning as a source of fear and hope and sends down water from the sky and revives the earth with it after its death. In this are signs for a people who use their intellect.
He who shows lightning as fear:
The Cow/2:19
Or they are like one who, in the darkness and thunder and lightning and rain pouring down from the sky, sticks his fingers in his ears for fear of being killed by lightning. This is how Allah encompasses the disbelievers.