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Jesus could have been an antique meme à la Chuck Norris that got waaaay out of hand
(sh.itjust.works)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
It is obviously intentionally done to mimic the ritual sacrifice of the two goats on Yom Kippur, the day of atonement. Two goats were presented to the high priest, one was chosen by casting lots to be sacrificed on the altar and the other was cast into the wilderness, purifying the people of Israel of their sins. In the story, Jesus plays the role of both goats.
All of that is speculation since we have no way of knowing what actually happened. The only thing we know for certain is that a lot of people back then wrote a lot of bat shit lunacy.