"A Letter to the Reverend Mr. Carey, Containing Remarks on His Review of "The Fundamentals of Christianity Tested by a Comparison of the New Testament with the Old"" is a book by the American author George Bethune English. In this work, the author turns to the idea of comparing the New Testament with the Old Testament, trying to identify common or distinctive features of Christian theology. Using the correspondence, he analyzes Reverend Carey's statement and adds his own thoughts on the comparisons and contradictions that may arise when comparing these two parts of the Bible. This book will be of interest to those interested in Christian theology and the comparative study of Scripture.