BOSTON — Republican Mitt Romney retorted to questions about his faith by surging rival Mike Huckabee on Wednesday, declaring that "attacking someone's religion is really going too far."

In an article to be published Sunday in The New York Times, Huckabee, an ordained Southern Baptist minister, asks, "Don't Mormons believe that Jesus and the devil are brothers?"

Romney, vying to become the first Mormon elected president, declined to answer that question during an interview Wednesday, saying church leaders in Salt Lake City had already addressed the topic.

"But I think attacking someone's religion is really going too far. It's just not the American way, and I think people will reject that," Romney told NBC's "Today" show.

Asked if he believed Huckabee was speaking in a coded language to evangelicals, Romney praised his rival as a "good man trying to do the best he can," but he added, "I don't believe that the people of this country are going to choose a person based on their faith and what church they go to."

Huckabee maintains that his question in the interview was taken out of context. A statement from his campaign said the full context of the exchange shows Huckabee illustrating his unwillingness to answer questions about Mormonism and theological issues.

"Governor Huckabee has said consistently that he believes this campaign should center on a discussion of the important issues confronting our nation and not focus on questions of religious belief," said Charmaine Yoest, a senior adviser.

But Huckabee's campaign did not provide more information about the exchange, which the magazine reported this way in the article by Zev Chafets: "I asked Huckabee, who describes himself as the only Republican candidate with a degree in theology, if he considered Mormonism a cult or a religion. 'I think it's a religion,' he said. 'I really don't know much about it.'

"I was about to jot down this piece of boilerplate when Huckabee surprised me with a question of his own: 'Don't Mormons,' he asked in an innocent voice, 'believe that Jesus and the devil are brothers?"'

Huckabee has been surging in recent opinion polls, taking the GOP lead in Iowa and pressing closer to Rudy Giuliani in polling.

The former Massachusetts governor also was asked why he used the term "Mormon" only once last week in a highly publicized speech about religion in which he said he was proud of his faith.