They just don't have the mental capacity to grasp all you are saying .
This is why when witnessing to people, especially JW's a person MUST speak to the conscience. The con + science , literally means "with knowledge". It knows.
Although the intellect may pretend laziness, the conscience does not, except in rare cases of sociopathy.
Jesus spoke to the Jews differently than he commanded the apostles to speak to the gentiles. Why? Because the gentiles were far less educated in the laws and wisdom of God. To the Jews, the message was the Kingdom. To the gentiles the message was JUDGMENT.
Acts 10: 39
we are witnesses of all things which he did both in the land of the Jews, and in Jerusalem; whom they slew and hanged on a tree:
Him God raised up the third day, and shewed him openly;
Not to all the people, but unto witnesses chosen before God, even to us, who did eat and drink with him after he rose from the dead.
And he commanded us to preach unto the people, and to testify that it is he which was ordained of God to be the Judge of quick and dead.
To him give all the prophets witness, that through his name whosoever believeth in him shall receive remission of sins.
This is the message to the gentiles that brought down the Roman Empire without drawing a sword. If we want to be successful in bringing down the WT, we must follow the Master's instructions. The message to JW's (as for the rest of us) is one of Judgment. And, it is coming AFTER we die. (Hebrews 9:27)
The Watchtower has a gaping hole in its theology so big you can drive London city bus through it.
JW'S ARE GUILTY BEFORE THE LORD AND HAVE NO WAY TO GET THEIR SINS FORGIVEN.