'Do Not Lie': Man Lives by Biblical Rules for a Year

Sept. 23, 2009— -- A.J. Jacobs likes to say he's "officially Jewish," but "in the same way the Olive Garden is an Italian restaurant," he said. And it could be for that reason that the author decided to experience what it means to "live biblically," diving into religion headfirst.

Jacobs lived for one year according to the rules of the Bible. In his book, "The Year of Living Biblically," he writes about interpreting the Bible's rules -- including all the Ten Commandments -- and finding their relevance in the 21st century.

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To explore one 21st century interpretation of the ninth commandment -- "Thou shall not bear false witness against thy neighbor" -- ABC News' David Wright sat down with Jacobs, who said the original meaning of the commandment dealt with perjury.

"If you take it in its original meaning, then it deals with lying on the stand ... perjury. You should not say, 'My neighbor stole a cow,' when he didn't steal the cow," Jacobs explained.

But Jacobs went beyond that, living by the intent of the commandment, which he interpreted to mean: "Do not lie."

"Over the year, it evolved to me that, you should not lie," he said. "So that's what I tried to do, and for a while during my biblical year, I tried to tell no lies whatsoever and it was the worst experience of my life."