Unprecedented evangelical unity across the UK will run from April to October with 100,000+ Christians taking part in '17:21'. The initiative is named after Jesus prayer in John 17:21: 'May they all be one that the world might believe'. Christian groups, conferences and festivals will read the same Bible reading, prayer of commitment, and declaration of a shared life in Christ, and play the same worship song. Malcolm Duncan, representing Spring Harvest, added, 'The 17:21 initiative calls all of us who stand under the shadow of the Cross to link arms in the great responsibility that God has given us – presenting a living Saviour to a dying world. I have been humbled and thrilled to be part of this call to the festivals, conventions and Bible weeks in the United Kingdom to declare that we are united by far more than what divides us. May God take us beyond structural and mechanistic unity and give us the boldness and courage to stand together for Christ.' The initiative comes in the year of the 500th anniversary of the Reformation.