I found this info on Proverbs 4:18 and the justification of the WTS for their interpretation of this scripture and their being the only religious group that makes this application. It has been written by ex-jws with long experience with this teaching and why the application is wrong by using WTS quotes and reasoning from other scriptures is the WTS application supported by the bible.
https://jwfacts.com/watchtower/light-gets-brighter.php
Jehovah's Witnesses claim to be the only group to teach truth, as revealed to their Governing Body by Jehovah. If this is the case, why has Watchtower doctrine experienced ongoing changes? Watchtower justifies this as the "light gets brighter." This article examines the logic behind such a claim.
A key premise of this site is that constant changes in doctrine and failed predictions are clear indication that Jehovah does not direct Watchtower. For the external observer this is the logical conclusion, yet for one of Jehovah's Witnesses it barely raises a grimace. How can this be? Because changes and failures are immediately dismissed by the thought stopping concept:
Does truth change? continues