The work inaugurated by Jesus aims at nothing less than a supernatural renewal of the world, whereby all evil will be overcome, a renewal of the physical as well of the spiritual world. Because in reality it would now appear that the two lay far apart in point of time, it was all the more necessary that some solid anticipations of the eschatological change should be given. Here, as on other points, our Lord’s teaching warns us against that excessive spiritualizing tendency, to which the external world becomes altogether worthless and indifferent or even withdrawn from the direct control of God. Geerhardus Vos

Conn’s lectures here are so good

Mission is “the mother of theology.” In mutuality and comradeship, theology and mission say together, “The mission of God is our concern; the global mission of the church is our life.” Harvie Conn