By Dan Gilgoff, CNN.com Religion Editor

(CNN) - A handful of Republican candidates took aim at Herman Cain’s 9-9-9 tax plan at Tuesday night’s presidential debate, but only one went so far as to imply it could be the devil's work.

“When you take the 9-9-9 plan and you turn it upside won, the devil is in the details," Rep. Michele Bachmann of Minnesota said during the New Hampshire debate, alluding to the number 666, which is commonly connected to Satan.

The New Testament’s Book of Revelation identifies 666 with the mark of the beast, sometimes referred to as the antichrist or the devil.

According to the popular biblical study site biblestudytools.com, the Book of Revelation refers to two beasts, one of which “forces the worship of the antichrist and brands those who do so with the mark” of 666.

Cain, a former Godfather's Pizza executive who has recently surged in national polls, has proposed a plan to eliminate almost all national taxes and set corporate, sales and income taxes at a flat 9%.

Bachmann, a longtime evangelical Lutheran who recently left her church, is well-known for her professed deep religious convictions.

In an earlier presidential debate, Bachmann was asked about the biblical mandate that wives should submit to their husbands in an exchange that many Republicans called unfair.

"Marcus and I will be married for 33 years this September 10,” she replied. “I'm in love with him. I'm so proud of him. What submission means to us, it means respect. I respect my husband. He's a wonderful godly man and great father."