The same gospel that draws us near to God pushes outward into the world. Just try to find an example in the Bible of a life spent in secluded devotion. It’s not there. Throughout God’s sacred story those who walk closest to the Lord live more fully in the world. Those who are deeply devoted to God spend the most time loving their neighbors.
Why is that? It’s because the nature of God, the goodness of the gospel, and the design of the church pushes us out into the world. It can’t be helped. A gospel-saturated disciple can no more resist the outward push of the gospel than a child can indefinitely cling to a spinning merry-go-round. We are a sent people. Put simply, it is natural and certain that people whose lives that have been turned inside out by the gospel will speak to others about the gospel.
God’s Kingdom is the only one in which every single citizen is required to serve as an ambassador on foreign soil. Colin Marshall and Tony Payne put it this way, “The Christian without a missionary heart is an anomaly. The missionary heart will be seen in all kinds of ways: in prayers for the lost, in making sure our behaviour offends no one, in gospel conversations with friends (at dinner parties!), and in making every effort to save some.”