They answered — By personal reflection; the argument they could not answer, and therefore did not attempt it. Art thou also a Galilean? — One of his party? Out of Galilee ariseth no prophet — They could not but know the contrary. They knew Jonah arose out of Gethhepher; and Nahum from another village in Galilee. Yea, and Thisbe, the town of Elijah, the Tishbite, was in Galilee also. They might likewise have known that Jesus was not born in Galilee, but at Bethlehem, even from the public register there, and from the genealogies of the family of David. They were conscious this poor answer would not bear examination, and so took care to prevent a reply.
Related Commentaries of John 7:52
John 7:52
52 They answered and said unto him, Art thou also of Galilee? Search, and look: for out of Galilee ariseth no prophet.