"My Utmost for His Highest" is a devotional book written by Oswald Chambers, first published in 1927. It consists of daily readings that encourage readers to deepen their spiritual lives and commitment to Christianity. Each entry offers insights and reflections based on biblical passages, aiming to inspire personal growth and a closer relationship with God. The book emphasizes the importance of surrendering to God's will and living a life of faith and service. Its timeless messages resonate with many believers, making it a popular resource for daily devotionals and spiritual guidance across various denominations within Christianity.