Great tribulation/persecution such as the world has ever seen and The pouring out of the vials/ Gods wrath, are two completely different things! False teachers have taught a lie. Even Kirk Cameron has admitted that the left behind series is incorrect and based on a theory that is no older than 250 years. The KJV has been in existence longer.
Know you Bible
Study to shew thyself approved, a workman need not be ashamed, rightly dividing the word of truth!
It was the 14 year old girl, forgot her name, and John Darby who spread it like garbage. Then Scofeild decided he could get rich selling bibles so, he did!