This volume defines "Christianity" broadly to include Catholic, Protestant, and Orthodox traditions and various denominations and schools of thought within them. It draws on Christian ideas and institutions, norms and practices, texts and titans to tell the story of Christianity's engagement with the world of law over the past two millennia. The volume also defines "law" broadly as the normative order of justice, power, and freedom. The chapters address natural laws of conscience, reason, and the Bible and positive laws enacted by states, churches, and voluntary associations. Several chapters focus on Christian engagement with specific types of law: canon law, family law, education law, constitutional law, criminal law, procedural law, and laws governing labor, tax, contracts, torts, property, and beyond. Other chapters take up cutting edge legal issues of racial justice, environmental care, migration, euthanasia, and (bio)technology as well as fundamental legal principles of liberty, dignity, equality, justice, equity, judgment, and solidarity.