In Holiness: Its Nature, Hindrances, Difficulties and Roots, Bishop Ryle, being driven by a deep conviction for many years that practical holiness and entire self-consecration to God are not sufficiently attended to by modern evangelicals in the country, addresses hard and trying subjects that most modern evangelicals have chosen to ignore: the power and depth of indwelling sin, the necessity of a holy life, the struggle and fight of faith, and counting the cost of following Christ, among others.