Cumming, Ga. ? Rick Santorum on Sunday condemned what he called President Barack Obama’s world view that “elevates the Earth above man,” discouraging increased use of natural resources.

The GOP presidential candidate also slammed Obama’s health care overhaul for requiring insurers to pay for prenatal tests that, Santorum said, will encourage more abortions.

A day after telling an Ohio audience that Obama’s agenda is based on “some phony theology, not a theology based on the Bible,” Santorum said he wasn’t criticizing the president’s Christianity.

“I’ve repeatedly said I don’t question the president’s faith. I’ve repeatedly said that I believe the president’s Christian,” Santorum told CBS’ “Face the Nation.”

“I am talking about his world view and the way he approaches problems in this country. I think they’re different than how most people do in America,” he said in the broadcast interview.

The former Pennsylvania senator said Obama’s environmental policies promote ideas of “radical environmentalists,” who, Santorum argues, oppose greater use of the country’s natural resources because they believe “man is here to serve the Earth.” He said that was the reference he was making Saturday in his Ohio campaign appearance when he denounced a “phony theology.”

When pressed by reporters after he made the initial remark, however, Santorum made no mention of the president’s environmental policies. Instead, he suggested that Obama practices one of the “different stripes of Christianity.”

Santorum walked back those comments on CBS Sunday morning.

But later in the day, he again criticized Obama’s “theology” — with no reference to his environmental policies — while speaking to more than 2,000 supporters gathered at a suburban Atlanta megachurch.

The president is “trampling on a constitutional right,” Santorum said of the Obama administration’s recent decision to allow employees of religious schools and hospitals to have birth control covered by their insurance policies.

“It is imposing his ideology on a group of people expressing their theology, their moral code,” Santorum told those gathered in the First Redeemer Church, a megachurch that hosted former presidential candidate Mike Huckabee four years ago.

Obama’s campaign said Santorum’s initial remarks were another attack on the president’s faith by Republican rivals in a nominating contest that has grown increasingly bitter and negative.

“It’s just time to get rid of this mindset in our politics that, if we disagree, we have to question character and faith,” said Robert Gibbs, Obama’s former press secretary, on ABC’s “This Week.”