Oswald Chambers was a Scottish Christian minister and teacher, born on July 24, 1874. He is best known for his devotional book, My Utmost for His Highest, which has inspired millions since its publication in 1927. Chambers emphasized the importance of a personal relationship with God and the necessity of spiritual growth through faith and service. Chambers served as a chaplain during World War I, where he ministered to soldiers. His teachings focused on the significance of surrendering to God's will and living a life of obedience. He passed away on November 15, 1917, but his writings continue to influence many today.