Serena Fass has attempted to illustrate Jesus' Great Commission: "Go into all the world and preach the gospel to all creation. Whoever believes and is baptised will be saved." (Mark 16: 15 - 16) and has presented a balance between the many different strands of the Christian faith, for each century, from the earliest Christians in Pompeii until today, and criss-crossing the globe from North to South: from Norway to Mozambique - and West to East: from Peru to Australia. Categories include architecture, painting, sculpture, ivories, textiles, metalwork, jewellery and portraits of people wearing crosses, as well as examples of the cross in nature.