A viewer asks, "How did the Rabbis in the Talmud know about Gehinnom if it's not written in the Five Books of Moses?" Rabbi Yaron Reuven explains that one of the proofs is in this week's Torah portion, Parashat Korach. Where Korach and his assembly descended alive into She'olah, one of the names for Gehinnom. There are dozens of proofs of Gehinnom just in the Tanakh, and thousands in the Oral Torah.