Some call today's refugee crisis a disaster. Patrick Johnstone sees divine blessings. Millions are on the move, driven by war, drought, terrorism, poverty, failed states, environmental catastrophes, disease, revolutions, and the desire for a better life. Christians have a unique perspective because Jesus was a refugee. So was Abraham. So was Joseph. So was Moses. "God has used migration for millennia to achieve His purposes for His people," says Johnstone, the pioneering missionary researcher and author of the bestselling book Operation World. "He is doing so again in our time." Today, some turn their backs on refugees. Patrick Johnstone helps us understand what's causing today's refugee crisis, explore Christian theology and tradition on migration, and see how Christian workers around the globe are opening their hearts to embrace these modern outcasts. "The world has literally come to our doorstep," says Johnstone. "Will we open the door?"