The central argument of Obama's speech was: "Democracy demands that the religiously motivated translate their concerns into universal, rather than religion-specific values. It requires that their proposals be subject to argument, and amenable to reason."
"What he (Obama) is saying here is that unless everyone agrees, we have no right to fight for what we believe," Dobson said.
Dr Tony Beam, director of the Christian Worldview Center at North Greenville University in Tigerville, South Carolina, also found fault with Obama's view that the truth is flexible.
"He sees truth as something that can be hammered into a compromise position that can then become amenable, not to the set standard of a Holy God, but to the ever changing and ever compromising standards of sinful humans," Beam wrote in his column.
"Truth, absolute truth that comes from God's revelation of Himself in His Word, defies the vote of the majority. It flies in the face of opinion polls and focus groups. What makes Barack Obama, Jim Wallis, or anyone else believe the only way truth can be injected into the public arena is by stuffing it with reason and coating it with compromise?" Beam asked.
The professor then pointed to Obama's speech earlier this year at Hocking College in Nelsonville, Ohio, where the presidential hopeful said he supports a woman's right to have an abortion and believes the Bible condones civil unions.
"If people find that (civil unions) controversial then I would just refer them to the Sermon on the Mount, which I think is, in my mind, for my faith, more central than an obscure passage in Romans," Obama had said.
"Before evangelicals run out to vote for Obama," Beam warned, "they need to ask themselves if they really want to support a candidate who says they are Christian but believes Paul's theological capstone of the New Testament is nothing more than an obscure passage."
"We should all thank Dr Dobson and Tom Minnery for stepping up to the plate and refusing to allow Obama's universalist theology and warped sense of evangelical political expediency to go unchallenged," he said.
Earlier this week Obama gave a speech about his plan to expand faith-based programmes if elected president in a move to court religious voters. He will continue to focus on American values, including religious faith and patriotism, on the campaign trail this week leading up to the Fourth of July.
