A theology of mission in one sentence

Thanks my dear friend Insomnia, here's what I read at 4.01 this morning:

 'The whole action [redemptive history] has its action in the eternal being of the Triune God before the creation; it has its goal in the final unity of  the whole creation in Christ; and meanwhile the secret of this cosmic plan, the foretaste of its completion, has been entrusted to these little communities of marginal people scattered through the towns and cities of Asia Minor' {Lesslie Newbiggin, The Open Secret, SPCK 1995, p 71-72)