NET
34 Then the crowd responded, “We have heard from the law that the Christ will remain forever. How can you say, ‘The Son of Man must be lifted up’? Who is this Son of Man?”
Darby
34 The crowd answered him, We have heard out of the law that the Christ abides for ever; and how sayest thou that the Son of man must be lifted up? Who *is* this, the Son of man?
KJV
34 The people answered him, We have heard out of the law that Christ abideth for ever: and how sayest thou, The Son of man must be lifted up? who is this Son of man?