Mitch Albom has seen plenty of extremely large men, which isn't surprising after a quarter century as one of America's top sports writers. But he wasn't ready for the giant who met him outside the Pilgrim Church's dilapidated Gothic sanctuary near downtown Detroit. The Rev. Henry Covington was as tall as a basketball player, but weighed 400 pounds or more.

"His body seemed to unroll in layers, a broad slab of a chest cascading into a huge belly that hung like a pillow over the belt of his pants. His arms spread the sleeves of his oversized white T-shirt. His forehead was sweating, and he breathed heavily, as if he had just climbed stairs," wrote Albom, in "Have a Little Faith," a slim book that represents his return to non-fiction 12 years after his inspirational bestseller "Tuesdays With Morrie."

Albom's first impression was crystal clear: "If this is a man of God ... I'm the man in the moon."

Covington certainly stood in stark contrast to the other clergyman whose image was fixed in the writer's mind at the time -- the late Albert Lewis, the articulate leader of the Jewish congregation in which Albom grew up, in Cherry Hill, N.J.

The elderly rabbi had shocked Albom by asking him to deliver his eulogy, when that became necessary. This led to eight years of talks between "the Reb" and the skeptical journalist, who had walked away from his Jewish faith after college. This process resembled those philosophical Tuesday dialogues between Albom and a favorite college professor, Morrie Schwartz, in the years before he died of Lou Gehrig's disease.

But Albom wasn't looking for another book during his weekday visit to Pilgrim's Church. He had -- while working to boost Detroit charities -- dropped by to learn more about the tiny Pentecostal flock's work with the homeless.

Albom expected to meet people there scarred by life on the street or behind bars, but didn't expect to find one in the pulpit.

In "Have a Little Faith," Albom describes a dramatic sermon in which Covington explored the twisted road that led to redemption: "Amazing grace. ... I coulda been dead. ... Shoulda been dead! … Woulda been dead! … His grace … saved a wretch. And I was a wretch. You know what a wretch is? I was a crackhead, an alcoholic, I was a heroin addict, a liar, a thief. I was all those things. But then came Jesus."

At first, "I wasn't sure that I trusted him," said Albom, in a quick telephone interview. "I thought, 'Isn't there supposed to be some minimal 'goodness' quotient in all of this? How can you have done all of that and now call yourself a man of God?' "

As Albom met members of Covington's church and heard their stories, bonds of trust developed, followed by friendship. Then some of the lessons he learned there began to overlap and interact with what he was learning in his pre-eulogy talks with Rabbi Lewis. There was an emphasis on respecting others, doing good works and helping needy and struggling seekers.

The writer rediscovered his own Jewish roots, but he also had to confront the blunt, powerful claims of Covington's preaching. The rabbi's approach was broad, universal and embraced all faiths. The preacher's faith reached out to others, but remained rooted in the claims of Christianity. He didn't force the needy to convert, but he witnessed to them and prayed for their conversion.

This led Albom back to some of the big questions that emerged from the dialogues with his rabbi: "How can different religions coexist? If one faith believes on thing, and another believes something else, how can they both be correct? And does one religion have the right -- or even the obligation -- to try to convert the other?"

At the end of the book, Albom concludes: "God sings, we hum along, and there are many melodies, but it's all one song." At the same time, he chooses to worship in his familiar Jewish congregation, as well as at Pilgrim's Church.

"What can I say? I like Henry's sermons and I like the people and I like the spirit in that church. It is what it is," said Albom.

"I've decided that I'm not wise enough to tell you that one faith is better than another. God will have to sort it all out. That's in God's hands."