Mayor: What do you mean, "biblical"?
Dr. Raymond Stantz: What he means is Old Testament, Mr. Mayor, real wrath-of-God type stuff. Fire and brimstone coming down from the sky! Rivers and seas boiling!
Dr. Egon Spengler: Forty years of darkness! Earthquakes, volcanoes...
Winston Zeddmore: The dead rising from the grave!
Dr. Peter Venkman: Human sacrifice, dogs and cats living together - MASS HYSTERIA!