David McCasland is an American author and speaker best known for his biographical works and as a contributor to the daily devotional "Our Daily Bread." One of his most acclaimed books is "Oswald Chambers: Abandoned to God," which tells the story of the influential Scottish minister and teacher whose thoughts were compiled posthumously by his wife into the devotional classic "My Utmost for His Highest." McCasland's writing often reflects his Christian faith, and he has written several other biographies and works of inspirational literature. His efforts in bringing historical Christian figures to life have provided insight and inspiration to many readers.