A.T. Robertson Commentary John 19:9

"and he entered into the Praetorium again, and saith unto Jesus, Whence art thou? But Jesus gave him no answer." — John 19:9 (ASV)

Whence art thou? (ποθεν ε συ; ). Pilate knew that Jesus was from Galilee (Luke 23:6f.). He is really alarmed. See a like question by the Jews in 8:25.

Gave him no answer (αποκρισιν ουκ εδωκεν αυτω). See same idiom in 1:22. Αποκρισις (old word from αποκρινομα) occurs also in Lu 2:47; 20:26. The silence of Jesus, like that before Caiaphas (Matthew 26:63) and Herod (Luke 23:9), irritates the dignity of Pilate in spite of his fears.