The question of whether Jesus is the prophet is repeated throughout John, beginning in chapter 1, but at the end of John 5, Jesus tells them their accuser is Moses, who spoke of Him.
This leads to two "Moses-like" miracles, the feeding of 5000 and the water miracle (a crossing of the Sea of Galilee.) This leads the crowd to follow him and they begin to question him using Moses as an example. There is a bit of irony here since the example they give is the manna in the wilderness and Jesus has just fed them!
There are two other elements that come into play in this narrative, but they will need to wait a bit until I find some time. One that you might want to experiment with is how we should sentence-outline the section in question.