“No prophet arises from Galilee.” “The Christ will not come from Galilee, will he?” Galilee – that ignorant backwater? Come on, even the Galileans didn't think that one of them could be the Messiah, what more proof do you need? Nicodemus points out that the Pharisees are judging Christ before they've heard Him out. The Pharisees mock him - “You are not from Galilee also, are you?”; sneer at the crowds for not knowing the Law; and go off to their own homes. They never give a moment's consideration to the possibility that they are wrong. They will condemn Christ for making Himself out to be God; but they are setting themselves up so high that they might as well be making that claim themselves. The crowd doesn't know the Law. They know the Law. The crowd doesn't know God. They know God. They are so full of their own pride that there is nothing Christ can say that they will listen to.
The crowds are confused and divided; the Pharisees are full of their pride and their plots; the only moment of grace to be found comes from the guards. “Never before has anyone spoken like this man.” It's not quite a confession of faith – only of uncertainty. But it's a starting point, something God can work with for those who permit Him.