Reaching the World in Our Own Backyard is designed as a guidebook for Christians to better understand and engage people from other countries including immigrants, foreign exchange students, and tourists. By both region and religion, author Rajendra K. Pillai explains cultural considerations and common points of reference to readers eager to share the good news of Jesus Christ with foreign-born individuals.

Between 1990 and 2000, Islam, Buddhism, and Hinduism–along with many other religions–grew at a record pace, due heavily to immigration and conversion. During this same period of time the number of people who call themselves Christians dropped by 9 percent. Meanwhile, 98 percent of churches experienced non-growth or declines in attendance.