When does theology cease to be theology?
Just as the church ceases to be the church if it is not missionary, theology ceases to be theology if it loses its missionary character. We are in need of a missiological agenda for theology rather than just a theological agenda for mission; for theology, rightly understood, has no reason to exist other than critically to accompany the missio Dei. So mission should be the theme of all theology.
-David J. Bosch, Transforming Mission, p. 494