KJV - 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?
ASV - The multitude therefore answered him, We have heard out of the law that the Christ abideth for ever: and how sayest thou, The Son of man must be lifted up? who is this Son of man?
BBE - Then the people in answer said to him, The law says that the Christ will have life without end: how say you then that it is necessary for the Son of man to be lifted up? Who is this Son of man?
WEB - The multitude answered him, "We have heard out of the law that the Christ remains forever. How do you say, 'The Son of Man must be lifted up?' Who is this Son of Man?"
YLT - the multitude answered him, `We heard out of the law that the Christ doth remain -- to the age; and how dost thou say, That it behoveth the Son of Man to be lifted up? who is this -- the Son of Man?'