The Holiness of God by R C Sproul and published by Tyndale.
From Rudolf Otto's mysterium tremendum to Martin Luther's "insanity" and Jonathan Edwards's fiery sermons, Sproul's classic offers an accessible exploration of history and Scripture that will help you understand---and live with---the tension between God's terrifying holiness and his inexplicable grace.
Sproul explains, "How we understand the person and character of God the Father affects every aspect of our lives....God is inescapable. There is no place we can hide from Him. Not only does He penetrate every aspect of our lives, but He penetrates it in his majestic holiness. Therefore we must seek to understand what the holy is. We dare not seek to avoid it. There can be no worship, no spiritual growth, no true obedience without it. It defines our goal as Christians. God has declared, "Be holy, because I am holy" (Lev. 11:44). To reach that goal, we must understand what holiness is."
Allow one of the all-time classic modern works on God's character to guide you more deeply into the presence of God as you respond to God's holiness. This edition of Sproul's work includes challenging study questions for individuals or small groups.