Oliver Cromwell has been much misjudged. In my opinion, after nearly ten years of reading him, I esteem him as one of the most remarkable Christians of his day. Here, for example, is advice he gave but two years before his death to his son Harry Cromwell: “with singleness of heart make the glory of the Lord your aim. Take heed of professing religion without the power…” (Letter, April 21, 1656).