The crowd spoke up. “The Law tells us that the Messiah will remain forever,” they said. “So how can you say, ‘The Son of Man must be lifted up’? Who is this ‘Son of Man’?”
In the law it is written, “With unfamiliar languages and through the lips of outsiders I will speak to these people. But even then they will not listen to me.” (Isaiah 28:11,12) That is what the Lord says.