"a crucifix on the wall"
The Crucufixion
GNU Free Documentation LicenseThe Crucifixion

Although the cross has become the symbol for Christianity, it actually represents 'the most wretched of deaths', according to First Century historian Josephus. He also called the act of crucifixion - nailing a human being to a cross - 'inhuman'.  

The story of Jesus' crucifixion is related in all four Gospels (Matthew, Mark, Luke and John).