My responses
1. Because of the success of the org, and all the info they put out, and the preaching work. It has to be divinely directed, there is no other explanation.
The preaching work has done more harm than good, making the religion look kooky, invasive and annoying, not the message that Jehovah would try to portray.
2. Because of how well what the org teaches matches up with the Bible.
Like how the bible says to beware of being legalistic?
3. There has to be one true religion! If it is not the jw, then who is it? Nobody even comes close to showing the traits we should look for in Jehovah's one true organization.
There may not be one true religion, and your parameters for a true religion is very exclusivistic. Who says that the true religion is Abrahamic?
Also, if the religion's true, why does it have all sorts of scientific, logical and spiritual errors in its past, and how do we know that those errors are not present as of right now?
4. Because the jw is the only religion that preaches the good news of the kingdom, which is a real government.
Again, read #1. The good news of the kingdom is being besmirched with being connected to a religion that's known for false prophecy, criminal negligence and intellectual dishonesty. It's counterproductive for the good news of the kingdom to be associated with this group.