Paul Williams, the CEO of one of the world's largest and oldest Bible societies, interprets the dissonance Christians often experience while trying to live out their faith in the 21st century, calling for a truly missional understanding of post-Christendom Christianity. Exiles on Mission invites readers to embrace the language of exile and imagine a hopeful mission of the scattered and gathered church in the post-Christian West. It shows a clear pathway for fruitful missional engagement for the whole people of God, helping Christians make sense of the world in which they live, more authentically integrate faith with everyday life, and orient all of their efforts within God's missional purpose for the world.