This issue of Scripture From Scratch looks at the Bible's teaching on war and nonviolence, the traditional "just war" teachings and the contemporary Church's return to Scripture in its teaching on war and nonviolence. Lisa Sowle Cahill, professor of Christian ethics at Boston College, explores the teachings of Jesus in the Sermon on the Mount, the experience of the early Christians in the Roman Empire, the teachings of Augustine and Thomas Aquinas and contemporary Church teaching on war and nonviolence.