Oswald Chambers ( 1874-1917 ) was a famous early 20th century Scottish Protestant Christian minister and teacher . He is best known as the author of the devotional My Utmost for His Highest . Oswald J. Chambers ( born July 24 , 1874 in Aberdeen , Scotland ; died November 15 , 1917 in Egypt ) was a prominent early twentieth century Scottish Protestant Christian minister and teacher , best known as the author of the widely-read devotional My Utmost for His Highest .