A piece of Ancient graffiti was discovered in Rome which dated to around the year 200. The graffiti shows a young man worshipping a crucified, donkey-headed figure with the inscription:
"Alexamenos worships his god”.
It’s likely that this graffiti was written to mock a Christian named Alexamenos for worshipping Jesus — the one crucified on a cross.
For to Ancient Romans, being crucified was equivalent to being a donkey — an idiot.
This graffiti shows that Romans thought it was a joke that someone would worship a foolish donkey.
Yet unexpectedly a foolish cross is precisely the method God uses to bring people to himself, as 1 Corinthians 1:18 says,
"For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God."
God works in surprising ways.