A.T. Robertson Commentary John 18:31

"Pilate therefore said unto them, Take him yourselves, and judge him according to your law. The Jews said unto him, It is not lawful for us to put any man to death:" — John 18:31 (ASV)

Yourselves (υμεις). Emphatic. Pilate shrewdly turns the case over to the Sanhedrin in reply to their insolence, who have said nothing whatever about their previous trial and condemnation of Jesus. He drew out at once the admission that they wanted the death of Jesus, not a fair trial for him, but Pilate's approval of their purpose to kill him (John 7:1,25).