i. The Evangelist had the Synoptic Gospels before him; and, where he
differs from them, he does so deliberately. Either his intention is to correct them, or at least he deliberately goes his own way.
It follows that he was a person who was conscious of writing with authority. If he had not been, and if he was only desirous of insinuating his own views under cover of a great name, we may be pretty sure that he would have kept closely to the lines already marked out by works that had a considerable vogue and a considerable reputation.