At Passover time some Greeks sought a meeting with Jesus, the writer of the Gospel of John's hint about the soon coming universality of the Gospel.  Jesus seemed to be rather obscure when answering these people's request.  However, he was thinking past the immediate and rather focused on his impending death and subsequent resurrection, for our sakes.  After this Jews and Gentiles alike would begin to "see Jesus" as he really was/is: "Unless a grain of wheat falls into the earth and dies, it remains just a single grain; but if it dies, it bears much fruit" (John 12:24, NRSV).