This book presents an original Christian moral psychology based upon the Cain and Abel story and discusses epilepsy, the Cain complex, and biblical lament. Special attention is devoted to moral emotions - rage, compassion, shame, and joy - as they flare up in children and family relationships in relation to an enemy. Lament is a cry of anger that erupts in protest against unfair suffering and that strives for justice through trust in God. As the first prayer of the Bible, Cain's lament reflects the pain of all those who commit evil to vindicate injustice.