How can the church’s reflection on its missionary task be again properly grounded? The answer lies in a carefully constructed biblical theology of mission that is hermeneutically sound, yet oriented toward the challenges facing the contemporary church. It has been increasingly recognized in recent years that it is inadequate to quote the great commission passages of the New Testament in an isolated fashion. Instead, one ought to understand a given biblical writer’s teaching on mission as a whole, first within the framework of his overall theology and then within the context of the entire canon. The present article seeks to contribute to such a project some insights from a detailed study of John’s mission theology.