John 12:34
The crowd spoke up, 'We have heard from the Law that the Messiah will remain forever, so how can you say, 'The Son of Man must be lifted up'? Who is this 'Son of Man'?' — the crowd's objection reflects the tension between messianic expectation (the Messiah's eternal reign) and Jesus' prediction of His death and lifting up. The question 'Who is this Son of Man?' expresses bewilderment at a suffering, dying messiah, a concept foreign to Jewish expectation. John uses this incomprehension to emphasize the radical nature of Jesus' claim and message.