"Flash of lightning" refers to the bright and sudden light that happens during a thunderstorm. It is a quick burst of light that comes from the sky, often followed by a loud sound called thunder. Full definition
There were exceptional flashes of lightning, and fiery dragons were seen flying in the air. (bookbrowse.com)
What's worse are the constant flashes of lightning. (jamiex66.com)
anointed, that will begin to manifest across the entire corpus of humanity, like flashes of lightning seen everywhere illuminating the darkness of the clouds. (redeeminggod.com)