When the host tasted the water that had become wine (he didn't know what had just happened but the servants, of course, knew), he called out to the bridegroom,
"Everybody I know begins with their finest wines and after the guests have had their fill brings in the cheap stuff. But you've saved the best till now!"
Jesus put together a whip out of strips of leather and chased them out of the Temple, stampeding the sheep and cattle, upending the tables of the loan sharks, spilling coins left and right.
Later, after he was raised from the dead, his disciples remembered he had said this. They then put two and two together and believed both what was written in Scripture and what Jesus had said.
During the time he was in Jerusalem, those days of the Passover Feast, many people noticed the signs he was displaying and, seeing they pointed straight to God, entrusted their lives to him.