Precocious and sometimes marginalized Klaus Bockmuehl’s insights regarding the Spirit’s agency in Christian Ethics, and therefore in our daily Christian experiences, have renewed import, now. This is an exceptional book, it introduces us for the first time to a much-neglected thinker. It also equips us with an understanding of how the Church can live ethically in power, through its relationship with the Father. In both respects it has much to offer its reader and the wider contemporary church.