The Sermon on the Mount

I thought this book was great and provided a lot of in sight until the author got to the meat of the book. I don't feel that attacking someone else's religion whether right or wrong is the way to go with a book on these three chapters. I understand the intolerance shown by Christ to those who do wrong, however, I feel that the author should have stuck to the study on this passage instead of going off on a tangent about the wrongs of Islam. Staying on topic is crucial when writing a book describing Biblical principles.