Book excerpt: How should Christians understand anger, evaluate it, and respond for good? We all struggle with anger at times: Our plans suddenly fall through, we lose a prized possession, or our reputation is called into question. More often than not, when anger knocks at the doors of our hearts we easily allow it to take over. But what if getting to the heart of our anger also reveals the way to transform it? Christopher Ash and Steve Midgley address this question by bringing to bear what the whole Bible has to say about sinful anger—revealing that anger is the sinful response when something we value more than God is taken away or threatened. They reflect on biblical portraits of human anger, God's righteous anger, and how only the gospel of Jesus Christ brings true freedom—transforming a heart of anger into a heart filled with the love of God.