What did the Galileans see?

When Jesus arrived back in Galilee, there was some excitement among the people. They had seen something earlier in Jerusalem that had left quite an impact on them by the look of the following verse. What was it that they had seen?

When he arrived in Galilee, the Galileans welcomed him. They had seen all that he had done in Jerusalem at the Passover Festival, for they also had been there. (John 4:45)

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What say my cyber buddies?