DOCTOR of the law, a title of honour among the Jews. The investiture, if we may so say, of this order was performed by putting a key and table book in their hands, which is what some authors imagine our Saviour had in view, Luke xi. 52. when speaking of the doctors of the law, he says, "Wo unto you, doctors of the law, for you have taken away the key of knowledge: you entered not in yourselves, and them that were entering you hindered."