- Greatly helped me understand the overall structure of the Sermon on the Mount. Dr Pennington sometimes covers the material a bit too quickly - but with Logos Mobile Ed I usually review to the audio version of the content before I go to bed. Great way to make sure that I don't miss any of the nuggets of gold that Dr Pennington uncovers. Well produced, accessible but still deep. Would like to see an updated version that captures his new content in his book.