The reason there is no source is because he never said it. Other quotes are sourced. This is not. Lincoln did say: "In regard to this Great Book, I have but to say, it is the best gift God has given to man. All the good the Savior gave to the world was communicated through this book." -- September 7, 1864 – Abraham Lincoln’s Reply to Loyal Colored People of Baltimore upon Presentation of a Bible and "That I am not a member of any Christian Church, is true; but I have never denied the truth of the Scriptures; and I have never spoken with intentional disrespect of religion in general, or any denomination of Christians in particular." -- July 31, 1846 - Handbill Replying to Charges of Infidelity and "I do not think I could myself, be brought to support a man for office, whom I knew to be an open enemy of, and scoffer at, religion." -- July 31, 1846 - Handbill Replying to Charges of Infidelity