Islam versus Christianity
Instead of explaining logical reasons for his conversion to Christianity, Omar simply includes both influences. The biography contains passages from the Koran and the Christian Bible alike, and Omar spends his time not judging the validity of the passages, but just contrasting their points of view. He isolates a specific aspect of Christianity that he finds particularly enlightening, namely the idea that God is our "Father," an idea that Jesus explicitly states in the Lord's Prayer. The Muslims from Omar's background would not have felt comfortable praying that way, in Omar's estimation.
Conversion, alignment, and belief
The book seems to be a quiet, thoughtful response to the attention Said received upon his conversion, but the question remains: What is his religion? Unfortunately, Omar never specifies. There are aspects of Christianity that he prefers, to be sure, but it isn't clear whether he "converted" as the news reports specify (he never says anything about conversion in this book) or whether he just aligned himself to certain aspects of Christianity, or whether he actually believed the evangelism of Jim Owen—these are issues that he leaves in the gray area. And that's exactly the point. Without clear, firm lines between his Islamic education and his Christian reality, the reader is left to assume that Omar's beliefs are neither perfectly Muslim or perfectly Christian, but they are perfectly Omar.
Religious hypocrisy
You don't have to be a Christian to know that a "Christian" who can travel to Africa, rape and murder a village and kidnap the men into slavery—that man isn't following "Christ's" example. Neither was slave master Johnson, Omar's first master in America, who brutally mistreated him. Omar calls all of these slave traders infidels, not because they don't believe in Allah or his Prophet, but because even according to their own Christian faith, they are failing. Christ's example is undeniably pacifistic, so Omar notices that all the violence and hatred from American slavery doesn't fit within the religion.
