How did Abraham Lincoln's study of scripture influence him as a man and president? Historian Gordon Leidner believes the impact was profound - more than previously recognised - and has investigated all the known writings of Abraham Lincoln to identify, catalogue, and study every instance in which Lincoln quoted from or alluded to the Bible.

Leidner presents an in-depth review of Lincoln's faith and reliance on scripture by reviewing every occurrence in which he quoted or alluded to the Bible in the Collected Works of Abraham Lincoln. The book informs readers how Lincoln used the Bible, what Lincoln's opinions were about the Bible and God, and how the Bible informed his transformational leadership skills.