Josephine Butler waged an unremitting campaign against the ‘state regulation of prostitution’, both in Britain and on the continent, from 1869 until her death. She was a convinced feminist, appalled by the double standard inherent in state regulation, and also, as this article demonstrates, a devout Anglican Evangelical whose spiritual experiences inspired her work. She argued for the right of ‘inspired’ Christian women to preach and teach and developed a radical feminist theology, claming that Christ had treated women as of equal importance to men and had ‘liberated’ them. Her belief in her individual mission enabled her to assume the leadership of a notoriously contentious and emotionally draining campaign.