In the end, John 3 presents a very troubling political and theological landscape: there is us and there is them, and them are where they are because they hate what we stand for. The warm and fuzzy feeling that is generally associated with John 3:16 can only be maintained if one stops reading right there. It gets scary and divisive and not very loving thereafter.
John offers the temple story at the beginning of his gospel although the other Synoptics place it at the end. Why might this be so? In my view, John wants to introduce us to the portrait of a “radical” Jesus whose revelatory message supercedes and fulfills the tenets of Judaic law, even to the point that it abolishes aspects of this law, a theme that will continue throughout the rest of his gospel.