(CNN) - The Rev. Franklin Graham clarified his thoughts on President Barack Obama's Christian faith Wednesday, one day after the evangelical leader took heat over making comments about the president's ties to Islam.
"I don't question the president's faith. I'm not questioning whether he's a Christian," Graham said on CNN's "Newsroom." "I disagree with his position on abortion."
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On Tuesday, Graham stirred controversy when he expressed uncertainty over whether the president is sincere enough in his faith.
He said when he asked Obama about how he became a Christian, the president said he joined a church in Chicago after becoming a community organizer, leaving Graham to speculate whether he became a Christian for the right motives.
"You have to ask him. I cannot ask that question for anybody," he said Tuesday in an interview on MSNBC.
This wasn't the first time Graham, who heads the humanitarian organization Samaritan's Purse, weighed in on the president's faith. The evangelical leader made headlines in 2010 when he said he believed Obama was born a Muslim because of his heritage, but now believes he is a Christian.
On Wednesday, Graham repeated that his biggest problem with Obama was the president's position on abortion rights.
"I like him as a person, but he's absolutely 100% dead wrong on this issue," Graham said on CNN. "He will have to stand before God one day and give an account to God on this issue."
Asked about his comments on Rick Santorum, in which Graham definitively said the Republican presidential hopeful was a Christian, the reverend said Wednesday he regretted his choice of words.
"I misspoke there when I said he is a man of faith. God only knows everybody's heart," he said. "I would be more in line with the position of Rick Santorum as it relates to abortion. He is opposed to abortion. I certainly appreciate that."