‘I believe in God.’ These opening words of the Christian creeds have stood at the heart of public worship and private theological reflection for centuries. Yet they have never been understood merely to mean ‘I assent to the existence of God’, or ‘I feel able to tick God-boxes on questionnaires’. Faith goes far beyond assenting to ideas; it has to do with active trust and commitment. To believe in God, in the deeply Christian sense of that word, is to accept and embrace God, in the full