It can travel anywhere in time and space, and it looks much bigger on the inside (or smaller on the outside, depending on where you're standing). In 1963, it blended in perfectly as a British police box. But now, the intergalactic space cruiser stands out like a sore thumb, whether it's landed in contemporary London or in the ancient Egyptian Sahara. It is strange, a foreign object that turns up in random places. And despite it being so alien—literally—nobody seems to bat an eyelid at the presence of the TARDIS from the global hit television show Doctor Who.
The cross of Christ is a similar anomaly. Turning up in fashion era after fashion era, displayed in churches and schools and graveyards across the world, and gracing the lyrics of our worship songs and the walls of our art galleries—this ancient instrument of Roman execution has become one of the most recognizable symbols on the planet. And yet it often escapes people's notice.
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