This is a guide to historic Christian beliefs. As Packer says, "This book sets out in short compass what seems to me to be the permanent essentials of Christianity, viewed as both a belief system and a way of life. … As I often tell my students, theology is for doxology and devotion—that is, the praise of God and the practice of godliness. It should therefore be presented in a way that brings the awareness of the divine presence. Theology is at its healthiest when it is consciously under the eye of God of whom it speaks, and when it is singing His glory."