Despite the challenges of attending church while in office, Obama has indicated that he has not been detached from his faith or faith communities during his first year.
The President told ABC News in July that he prays every night before going to bed.
"I pray all the time now," Obama said. "I've got a lot of stuff on my plate and I need guidance all the time."
Aides say some of that guidance comes from the president's faith advisory council of 25 religious and non-profit leaders who help the administration partner with faith-based and community groups in providing social services.
Rev. Wallis, a member of the council, says the council is another means for the president to hear messages otherwise preached from the pulpit. "I think he certainly listens to people of faith when we speak about things we are about," he said.
Obama and all former U.S. presidents professed faith in Christianity, with most men identifying as Episcopalians, according to the Pew Forum on Religion and Public Life. Obama is the first U.S. president who affiliates with the Christian Protestant denomination, the United Church of Christ.
Speaking on the eve of Martin Luther King Jr. Day earlier this month, Obama told a packed Vermont Avenue Baptist church in Washington, D.C., that faith keeps him grounded.
"I have a confession to make," he said. "There are times when I am not so calm. There are times when progress seems too slow. There are times when the words spoken about me hurt. There are times when the barbs sting. There are times when it feels like all these efforts are for not, that change is so painfully slow in coming and I have to confront my own doubt. During those times it is faith that keeps me calm."
ABC News' Sunlen Miller, Yunji de Nies and Russell Goldman contributed to this report.