What does it mean to have spiritual life, and how does a believer achieve it? What are the fruits of this spiritual life, and what are the hindrances and helps for cultivating it? In this classic treatise of Reformed spirituality, Campegius Vitringa provides answers to these questions as he teaches what it means to be made alive in Christ. Translated into English for the first time, The Spiritual Life is accompanied by a helpful biographical sketch of the author and revives the riches of Reformed piety for a new generation of readers.