(CNN) - A megachurch pastor and supporter of Texas Gov. Rick Perry stood firm Saturday on his stance that Christians should vote against presidential hopeful Mitt Romney because of his Mormon faith.
"Those of us that are evangelicals have every right to prefer and select a competent Christian over a competent non-Christian," Robert Jeffress, senior pastor of First Baptist Church Dallas, told CNN on Saturday.
Jeffress stirred controversy Friday when he told reporters at the Values Voter Summit in Washington that he believes Mormonism is a "cult."
The pastor hailed the Texas governor - who is vying for the Republican nomination and the chance to face off against President Barack Obama in 2012 - as a superior candidate to Romney because of his Christian faith.
His comments drew ire from former Education Secretary Bill Bennett on Saturday, who associated Jeffress' remarks with "bigotry" while speaking at the summit.
"Do not give voice to bigotry," Bennett said. "You stepped on and obscured the words of Perry and Santorum and Cain and Bachmann and everyone else who has spoken here. You did Rick Perry no good sir, in what you had to say."
While Romney didn't directly address the comments during his summit appearance Saturday, he praised Bennett for his speech.
Jeffress himself fired back later in the day, arguing that his statements were not bigoted. He cited John Jay, the first chief justice in the United States, who said that Christians have a "duty" to select other Christians as the country's leaders.
"I hardly think John Jay was a bigoted person," Jeffress said.
When asked about Article 6, paragraph 3 of the Constitution, which bans a religious test for the presidency, Jeffress said the clause only applies to the government, not individuals.
"We have every right to impose a litmus test on the kind of person we prefer," he said. "You can show preference without being a bigot and certainly without violating the Constitution."
CNN's Kyra Phillips on Saturday pressed Jeffress on whether religious beliefs should trump competence in presidential candidates.
"Yes," Jeffress said. "To religious people, religion matters."