The twin forces of globalization and urbanization are transforming the context of global missions. While the Western church grapples with the challenges of evangelism in an age of globalization, new evangelistic opportunities are emerging that blur the conventional boundaries between local and global outreach. Even as the rise of a persistent post-Christendom presents new challenges for the church, global migration is rearranging the religious and ethnic makeup of our cities. Cities are centers of constant change, and in an urban world, current missionaries will need to become adaptable....

Church leaders throughout North America are discovering the world has moved next door. In a globalized world, cities are mosaics of peoples and cultures where change is the only constant. Mosaic is a "crash course" on engaging culture. It serves as a resource for Christian leaders who have recognized that a cross-cultural mission field is now present in their own backyard and who desire to grow in their ability to incarnate the gospel among their culturally different neighbors.