Jehovah's Witnesses are recruiters. They do not study the Bible. Most JWs don't really even know the whole Bible. JWs are trained a certain way in order to convince you to join their religion (aka cult).
JWs study the Watchtower's publications, which are really just their sales aids, and use the Bible to back up what the Watchtower publishes, in order to convince you to join. If they cannot use their pre-determined method of salesmanship, they are lost. They are all told that without the Watchtower's magazines, etc, they cannot know the Bible. This is why they feel uncomfortable.
They need to bring in the elder to straighten you out so that you will accept the JW way of convincing you to join. If he can't do it, they'll likely stop coming.