The three-wheeled taxis of Sri Lanka, known as “tuk tuks,” are a convenient and delightful mode of transport for many. Lorraine, a resident of the capital of Colombo, also realized that they’re a mission field: hopping onto a tuk tuk one day, she found the friendly driver more than happy to engage in conversation about religion. The next time, she told herself, she would talk to the driver about the good news.

The book of Romans starts with Paul declaring himself as “set apart for the gospel of God” (Romans 1:1). The Greek word for “gospel” is evangelion, which means “good news.” Paul…