James Fraser endured a long conflict with doubts and in this little book, Am I a Christian?, he records how he overcame his fears and arrived at a firm assurance of his salvation in Christ. Taken from his memoirs (Memoirs of the Rev. James Fraser of Brea, found in Scottish Puritans: Select Biographies, volume two), in his book Heaven on Earth, Thomas Brooks wrote, ‘A man may be a true believer, and yet would give all the world, were it in his power, to know that he is a believer. To have grace, and to be sure that we have grace is heaven on this side of heaven.’