Oswald Chambers, a prominent early-twentieth-century Scottish Protestant Christian minister and teacher, is best known as the author of the widely read devotional My Utmost for His Highest.
In 1911, Chambers founded and became principal of the Bible Training College in Clapham in London. In 1915, feeling called to the World War I effort, Chambers became a YMCA chaplain. He announced that the Bible Training College would be suspending operations for the duration of the war. Chambers was assigned to Zeitoun in Egypt, where he ministered to Australian and New Zealand troops who were later part of the disastrous Battle of Gallipoli.
Chambers died on November 15, 1917 in Egypt as the result of a ruptured appendix. He suffered the extreme pain of appendicitis for three days before seeking medical attention, refusing to take a hospital bed needed by wounded soldiers.
Although there are more than 30 books that bear his name, he only penned one book, Baffled to Fight Better. His wife, Biddy, was a stenographer and could take dictation at a rate of 150 words per minute. During his time teaching at the Bible College and at various sites in Egypt, Biddy kept verbatim records of his lessons. She spent the remaining 30 years of her life compiling her records into the bulk of his published works.
Here’s one of Chambers' devotions that was published in My Utmost for His Highest.
Imagination v. Inspiration
"The simplicity that is in Christ." 2 Corinthians 11:3
Simplicity is the secret of seeing things clearly. A saint does not think clearly for a long while, but a saint ought to see clearly without any difficulty. You cannot think a spiritual muddle clear, you have to obey it clear. In intellectual matters you can think things out, but in spiritual matters you will think yourself into cotton wool. If there is something upon which God has put His pressure, obey in that matter, bring your imagination into captivity to the obedience of Christ with regard to it and everything will become as clear as daylight. The reasoning capacity comes afterwards, but we never see along that line, we see like children; when we try to be wise we see nothing (Matthew 11:25).
The tiniest thing we allow in our lives that is not under the control of the Holy Spirit is quite sufficient to account for spiritual muddle, and all the thinking we like to spend on it will never make it clear. Spiritual muddle is only made plain by obedience. Immediately we obey, we discern. This is humiliating, because when we are muddled we know the reason is in the temper of our mind. When the natural power of vision is devoted to the Holy Spirit, it becomes the power of perceiving God's will and the whole life is kept in simplicity.
Biographical information: Christian Classics Ethereal Library