F. J. Huegel was converted while in college as he read The Life of Christ by F. W. Farrar. He gave himself thereafter to full time ministry and served as a chaplain in World War I and as a missionary to Mexico for 25 years. He taught at Union Seminary in Mexico City. He also had an evangelistic ministry in Mexico's prisons. Huegel wrote and traveled to speak for God on the power of the cross and the inner life of the believer through the believer's participation in Christ.