Some time ago I read the late Ross Langmead’s The Word Made Flesh. I really enjoyed reading it. Here is a summary of the three dimensions of incarnational missiology that he mentioned.
(1) Following Jesus. “This vision of incarnational mission emphasises costly discipleship which involves a whole-of-life response in Christopraxis. It pursues holistic mission . . . It sees mission as being patterned on the life and teaching of Jesus, including solidarity with the poor, a life of vulnerable love, and a socio-religious challenge to the status quo which is likely to lead to suffering (the way of the cross).”
(2) Participation in Christ. This emphasises the “continuing presence and initiative of the risen Christ through the Holy Spirit, without which discipleship is impossible. . . . If mission as following Jesus emphasises the cost, mission as participating in Christ (or conforming to Christ) emphasises grace. Eastern Orthodoxy expresses the transformation which occurs as Christians live in Christ in terms of being drawn into the likeness to God or deified (theosis).
(3) Joining God’s incarnating mission. This dimension, as Langmead understood it, sees “God continually reaching out to the universe and becoming embodied in many ways in it, particularly in the life of humanity . . . The incarnating dynamic of God, therefore, is seen to begin in creation. It is also seen definitively in God’s redemptive self-emptying in Jesus Christ. It moves toward eschatological consummation, when the creator will fully indwell creation. God’s mission of enfleshment, meanwhile, is revealed to be the basis for inculturation . . . In considering this emphasis we [note] . . . that it would be a narrow view of incarnation if it referred only to God’s ‘turn to the world’ and it neglected the challenge to culture represented in the cross and Jesus’ prophetic teaching. Overall, this third dimension provides the basic view of reality in which the incarnation is a natural expression of God’s outgoing and incarnating nature.”
Source: Ross Langmead, The Word Made Flesh: Towards an Incarnational Missiology (Lanham: University Press of America, 2002), 270–1.