Story highlights Donald Trump said Tony Perkins advised him on his Liberty University speech

Trump said he'd asked Sarah Palin to address her son's arrest at a campaign stop Wednesday

Washington (CNN) Donald Trump says it's Tony Perkins' fault he said "two Corinthians" instead of "Second Corinthians" during a speech at Liberty University this week -- a mistake that raised questions about his biblical knowledge as he courts evangelical voters.

The Republican presidential front-runner said in an interview with CNN's Don Lemon Wednesday that Perkins, the president of the Family Research Council, had given him notes on what to say when he visited the evangelical university in Lynchburg, Virginia.

"Tony Perkins wrote that out for me -- he actually wrote out 2, he wrote out the number 2 Corinthians," Trump said. "I took exactly what Tony said, and I said, 'Well Tony has to know better than anybody.' "

Trump's pronunciation of the Bible verse drew laughter from the Christian audience -- but he downplayed it, saying his Scottish mother would have said "two Corinthians," as well.

"It's a very small deal, but a lot of people in different sections of the world say two, and I've had many, many people say that to me. My mother, as you know, was from Scotland, and they say two," Trump said.

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