The Book of the Living and The Dead

On Judgment Day on Rosh Hashanah, HaShem opens the Book of the Living and the Book of the Dead to judge the entire world. Rabbi Yaron Reuven says, it's obvious that the living need judged for their actions, but why are the dead judged? Because a person's actions still affect the world. If someone wrote a book that goes against HaShem, that's full of lies like the False Testament, and people read it and follow it, they have to be judged for everyone they caused to sin, and their sentence in Gehinnom (hell) is made more severe each year.

The same goes for people that make comments on the internet speaking against the truth of the Torah they don't like. If anyone made decisions based on those comments, a person will be judged for the actions caused by their comments. This is just a small slice of what the Sages call Omek HaDin: the depth of judgment. The more a person learns, the more they will understand what the truth is and the more they will only open their mouths or type comments online to publicize the only truth of the holy Torah and the teachings of the Jewish Sages, and run away from everything else.