Henry Allen Ironside (1876-1951) was born into a believing home in Toronto, Canada. After his father’s death, the family moved to California in 1886. Ironside was converted in 1890. After a stint in the Salvation Army (1890-1896), he laboured as an itinerant evangelist and Bible teacher until 1930 when he became the regular preacher at Moody Memorial Church in Chicago. During his residence there, he wrote this book. From 1948 until his death, he returned to his itinerant ministry. Besides sustaining a herculean preaching schedule for most of his active career, he authored more than sixty volumes.