John Gill Commentary John 18:29

"Pilate therefore went out unto them, and saith, What accusation bring ye against this man?" — John 18:29 (ASV)

Pilate then went out to them
Either into the street, or rather into the place called the pavement, and in Hebrew Gabbatha; see (John 19:13) the place where the Jewish sanhedrim used to sit; therefore in complaisance to them, since they would not come into his court of judicature, he condescends to go into one of theirs, which showed great civility and humanity in him:

and said, what accusation bring you against this man ?
meaning, what offence had he committed? what crime had they to charge him with? what did they accuse him of? and what proof had they to support their charge? His view was, to have the matter stated, the cause opened, and evidence given; that the accused being face to face with the accusers, might answer for himself; and he, as a judge, be capable of judging between them: all which were very commendable in him, and agreeably to the Roman laws; and have an appearance of equity, justice, and impartiality.