hmm...you know I think is season 3 but I'm not sure! I remember that Ben and Locke went at his cabin,but John could't see him. He thought Ben was lying to him,and saddenly Jacob (Locke still couldn't see him) started doing weird things,like moving the furniture and staff...
× we actually seen the side of his face at a glimpse when he asked locke to help him if u remember. locke was walkin out and heard help me and thought ben was sayin things, although ben couldnt hear anything and was just as scared as locke when things started flying around.
this is jst a long shot but when ben shot locke and dumped him in the ditch. he had a dream of a guy building a kabin and talkin to lock, was this jacob building his kabin which ben had taken him to??