Chapter I
What it means
For Christians the cross is the sign of the death of Jesus and of what that death achieved: forgiveness of sins and reconciliation between God and humanity. Because they believe he rose again, it is also a sign of victory over death.
Paul wrote that the cross was “foolishness” to some and a “stumbling block” to others, since crucifixion was the most shameful Roman punishment. Turning an instrument of execution into a sign of hope is at the heart of its meaning.
Chapter II
Where it comes from
Early Christians traced the sign of the cross on their foreheads, but rarely showed it in art, perhaps because crucifixion was still in use. They preferred signs such as the fish and the anchor. After the emperor Constantine’s support for Christianity and the abolition of crucifixion in the 4th century, the cross became the faith’s public emblem. Images of Christ on the cross became common from the 5th and 6th centuries.
Regional forms grew: the Greek cross with equal arms, the Orthodox cross with a slanted footrest, the Celtic cross with its ring.
Chapter III
Where you see it today
The cross crowns churches, is worn on chains and appears on the flags of many countries, from the Nordic crosses to the cross of St George. Processions carry it, and many Christians make the sign of the cross in prayer.