I have a growing unease with the use of the term ‘mission,’ and also ‘missional’ which in the last 15-20 years has been used increasingly to identify churches or activities with an outwardly focused ecclesiology. I find myself using them often; both as a ‘Lecturer in Mission’ and also as minister for churches which have recently undertaken ‘mission planning.’ The term ‘mission’ has patristic roots in the sending of the Spirit, but was taken up in the nineteenth century for the sending of people as ‘missionaries.’ The twentieth century has seen retrieval of the concept from cultural imperialism and denominational competition, and a recovery of its rootedness in the Trinity and missio Dei. Despite this theological rescue work, it is hard to use the term in a way sufficiently free from the prejudices of past errors.
There remain two simple semantic dangers with the terms ‘mission’ and ‘missional.’ Firstly, it is difficult to avoid an unhelpful dualism, dividing our life in Christ into separate spheres of activity. Merely by using the terms for some situations but not others, Christians invite the implication that there are some practices of discipleship which may be less than fully caught up in God sending love to the world through Jesus Christ. One possible strategy is to declare everything to be missional. The fact that this move invites the critique summed up by the phrase, “If everything is mission, nothing is mission” is not an argument that mission must remain limited as a concept, but rather that it may be, at best, redundant, and, at worst, hindering theological insight. Secondly, even when we use the term ‘mission’ with an understanding of missio Dei in the background, simple grammatical structures lead us back into a human-centred attitude. The ‘mission of God’ has its source in God, and the direction and practical outworking is in God’s control. However, when we speak of ‘the mission of the Church,’ we ought to take the grammar differently such that the ‘of’ does not imply ownership or control for the Church. Though the one who says ‘mission’ may intend this shift in grammar, it is not easy to maintain as a church plans its activities, nor is it easy to predict or shape the ways it may be heard in the midst of secular understandings of mission as organisational goal setting.
If we just stopped using the word ‘mission,’ what would replace it? It is the Holy Spirit which connects the missio Dei to the mission of the Church; is subtle misuse of the term hindering the Church’s life in the Spirit? There are ample pre-modern theological sources to draw on, and many recent writers who have engaged with reframing mission, but Jürgen Moltmann’s theology is particularly helpful by focusing on the Trinity, rather than mission, yet remaining consistently ‘missional’ in its outcomes: “God’s mission is nothing less than the sending of the Holy Spirit from the Father through the Son into this world, so that this world should not perish but live.” Theology of the Holy Spirit is rooted in several key Scripture passages, of which especially John 14-16 offers an understanding of the sending of the Spirit into and for the world, and the way the disciples are drawn into this sending. Jesus is leaving the disciples so that the Spirit will be sent to make him present with them (16:7), and where Jesus is present there is life (14:19). The Spirit glorifies Jesus in relations with the world (16:18), and draws the disciples into this process (16:14). As Moltmann puts it, the Spirit “convinces the world of its sins (16:7f), puts the unjust world to rights, and turns believers, from being the slaves and victims of sin, into free servants of the divine justice and righteousness which leads to eternal life in this world and the next (Rom.6:13f., 22).” The Spirit will live in them (14:17) and by the renewed presence of Jesus their joy will be complete (16:22). The Spirit brings the world into the presence of Christ, and disciples in whom the Spirit lives are signs of the first fruits (Rom. 8:23) of the reign of God through the work of Christ.
In our speaking and writing, can the concept of ‘mission’ be replaced by a renewed discourse about the life of the Holy Spirit making real the presence of Jesus Christ? Semantically this is a significant challenge as ‘mission’ serves as convenient shorthand, but if the shorthand is obscuring the work of the Spirit, perhaps it is worth attempting?
 Craig Van Gelder and Dwight J. Zscheile trace the developing use of this term from 1998 onwards in The Missional Church in Perspective: Mapping Trends and Shaping the Conversation (Grand Rapids: Baker Academic, 2011).
 David Bosch quotes this phrase as formulated by Stephen Neill in 1959; Transforming Mission, (New York: Orbis Books: 1991), p.511.
 The Source of Life: The Holy Spirit and the Theology of Life (Minneapolis: Fortress Press, 1997), p.19.
 The Spirit of Life: A Universal Affirmation (London: SCM, 1992), p.123.