Then answered the Jews, and said unto him, Say we not well that thou art a Samaritan, and hast a devil? Thou art a Samaritan - This was the same, among them, as heretic, or schismatic, among us. This is the only time in which the Jews gave our Lord this title of reproach; and they probably grounded it on his having preached among them, and lodged in their villages. See the account in John 4:39, John 4:40; but Samaritan, among them, meant a person unworthy of any credit.
Hast a devil? - Art possessed by an evil spirit; and art, in consequence, deranged.