The situation of the early Christians was one in which they were communicating the good news about Jesus to people who were not believers. It is worth remembering that people were believers only if they had become believers. The good news was news, something fresh that had not been heard before. Therefore, any people who became believers did so only as a result of the gospel being communicated to them. Whether deliberately or other wise, whether consciously or otherwise, the early Christian church grew through sharing the message of Jesus with people who were not believers . . . Consequently, the writings that we have arose out of that mission (709).
It can be affirmed that mission is the origin of the New Testament documents. At the same time, the documents are concerned in part with the forwarding of the actual evangelism and contribute to a theology of evangelism.
Focusing on this activity can carry with it the temptation to ignore the task of mission as the sharing of the gospel with those who have not yet heard it or beleived it . . . Even today believers may find their attention diverted to teh study of theology and other aspects of Christian living to teh detriment of evangelism, and this presupposition may give them a skewed reading of the New Testament (710).