Faith in God transcends unsettled questions, conflicts, and doubts—it serves as the antidote to errors, evils, and hostilities. Unfortunately, for many, faith takes a lifeless, stagnant form. In The Living God and a Living Faith, Mackintosh implores his readers to recover a living faith by following the example of Jehoshaphat. In the face of impending destruction and complete annihilation, Jehoshaphat’s faith in God saved Israel and transformed the kingdom. His unequivocal faith in God serves as a model for us to follow.
Man’s complete ruin in sin, and God’s perfect remedy in Christ, are fully, clearly, and often strikingly presented [in Mackintosh’s writings].
—Andrew Miller, a leader of the Plymouth Brethren movement
Charles Henry Mackintosh (1820–1896) was notable for his work in philanthropic work during the Irish Potatoe Famine which affected much of Ireland, Scotland, and England at the time. He converted to Christianity through correspondence with his sister and through reading John Darby's Operations of the Spirit.