Regarding sin, he tries to explain it using 3 loaves of bread, being 3 people and the affects on them in regards to different types of sin. Sinning against the HS, gross sin and grieving the HS. It is so silly.
He is able to explain what gross sin and grieving the HS means to JWs but can't really explain what sinning against the HS (which means the unforgivable sin).
He uses two biblical examples equating them to the unforgivable sin. One was when the pharisees said to Jesus that he didn't cure a man through God but through Satan, the other was Judas. He said that it wasn't for us to work out what was sinning against the HS but for God to judge. But it had to do with our heart condition.
They have defined what is sinning against the HS in the past but flip flop on their interpretation.
The fact is, they have no idea what sinning against the HS is because even though they judge a persons heart in many instances (repentance), there is not one thing a person can do that would disqualify him from potentially returning to the organization.
If it's not up to them to decide what is sinning against the HS then why are they making a judgement against Judas and the Pharisees? Just because they are dead does not give them the right to do this. They forget that they believe these were real people. If they can judge these people then why can't they do the same today?
By not understanding what it means and yet judging people from the past, shows their intention is to use the idea to impose fear into people.