Controversial Republican presidential aspirant Donald Trump has finally revealed his favourite verse in the Bible after telling an interviewer last month that he doesn't want to say it because it's "very personal."

In an interview with Christian Broadcasting Network early this week, Trump said the particular biblical verse that resonates with him is about "envy" that comes from the "Book of Proverbs."

"There's so many things that you can learn from it [The Bible]. Proverbs, the chapter 'never bend to envy.' I've had that thing all of my life where people are bending to envy," Trump said.

But there's a problem. The "never bend to envy" verse cannot be found anywhere in the Book of Proverbs or anywhere else in the Holy Scriptures. Several verses, however, mentioned the word "envy."

When the Washington Post asked what Trump meant, CBN reporter David Brody says the business mogul was actually referring to Proverbs 24:1-2: "Be not thou envious against evil men, neither desire to be with them. For their heart studieth destruction, and their lips talk of mischief."

However, this quote does not include the words "never," "bend," or "envy" as mentioned by Trump.

Nevertheless, while failing to successfully quote a Bible verse, Trump described the Holy Book as "special," and even compared it to an "incredible movie."

"The Bible is special. The Bible, the more you see it, the more you read it, the more incredible it is. I don't like to use this analogy, but like a great movie, a great, incredible movie," Trump said.

"You'll see it once it will be good. You'll see it again. You can see it 20 times and every time you'll appreciate it more. The Bible is the most special thing," he added.

Trump, a target in second Republican presidential debate

Meanwhile, Trump found himself the main target of his fellow Republican presidential aspirants during the second official Republican presidential candidates' debate at the Ronald Reagan Presidential Library in Simi Valley, California, on Wednesday, which was hosted by CNN.

Wisconsin Governor Scott Walker drew first blood, calling out Trump for his lack of government experience.

"Mr. Trump, we don't need an apprentice in the White House, we have one right now," Walker told Trump, alluding to the mogul's popular television show.

Trump, known for his hard-hitting comments, lashed back at Walker, referring to the latter's poor performance in popularity surveys.

"In Wisconsin I went to number one, and you went down the tubes," Trump, the current Republican survey frontrunner, said.

Carly Fiorina, the former chief executive of Hewlett-Packard and the only female GOP presidential candidate, once again captured the imagination of the public just like during the first Republican debate as she delivered another "command performance."

Responding to Trump's earlier insults about her looks in a recent magazine interview, Fiorina said, "I think women all over this country heard very clearly what Mr. Trump said," giving Trump a cold stare as she spoke amid loud applause.

Making an about-face, Trump replied: "I think she's got a beautiful face, and I think she's a beautiful woman."

Fiorina stole the limelight from the other candidates as she showed a firm command of military figures, blasted Democratic presidential bet Hillary Clinton for what she called her lack of accomplishments, and slamming Trump over his business practices.

"You ran up mountains of debt, as well as losses, using other people's money," Fiorina accused Trump. "Why should we trust you to manage the finances of this nation?" she asked.

Other candidates also had unkind words to say about Trump. Senator Lindsey Graham described him as a "cartoon character" while former New York governor George Pataki said the businessman is "unfit to be president of the United States."