LINWOOD, Pa. (CBS) – The devastating earthquake in Japan is nothing compared to what Chris McCann claims the world will experience next month.

“The bible says in Revelations 16, an earthquake so big, so great the world has never experienced.”

Inside an old union hall in Linwood, McCann is spreading the word; On Saturday, May 21st, he says, the world will come to an end. “Believe it, believe it, it’s going to happen,” said McCann.

McCann admits the actual date is not in the bible. He claims God only recently revealed to him and other believers that judgment day is near. Those who believe time is running out aren’t afraid to show it. From bumper stickers, to t-shirts, and billboards along I-95, the message is getting out in Philadelphia and across the country.

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This unique group of people is following the teachings of 89-year-old Harold Camping. He’s a Christian radio broadcaster based out of Oakland, California who wrongly predicted a similar event a few years ago.

The most recent Pew Research Center study found that 79% of Christians in the United States believe in the second coming of Jesus. And 20% think it will happen during their lifetime.

“If it doesn’t happen May 21st, it may happen some other time,” said Julie Zhu, who was visiting Philadelphia from China.

“The bible says no man will know the day or the hour,” said another man.

Dr. Alyn Waller, the pastor at Enon Tabernacle Church, agrees no one knows the date or the hour. He says it’s in Matthew 24 verse 36.

“Time is winding up, so I’m comfortable with seeing world events that challenge us to take our faith seriously, but I don’t think we can name the day because scripture is very, very clear,” said Waller.

Reported by Jericka Duncan, CBS 3

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