It’s a question that’s been wrestled with for centuries in Jewish tradition. What if someone says Elijah himself appeared to them?

According to some, that person might be peddling falsehoods, and the stakes are incredibly high. Maimonides, in his introduction to the Mishneh Torah, specifically in his commentary on Zera'im, addresses this very issue. He states that anyone claiming such a visitation, especially from someone referred to as the "grandfather of grandfathers" – a term for an ancient and supremely holy figure, also known as the "Supernal Crown" – is likely a false prophet. And according to Jewish law, the penalty for false prophecy? Death by strangulation. A pretty serious consequence for making unsubstantiated claims, wouldn't you agree?

But let's dive a little deeper. The Gemara Pesachim 34a presents two different perspectives on this. Rav Yochanan offers one view, and Reish Lakish presents another. It all hinges on a hypothetical situation: What if Elijah were to appear and declare that a woman, traditionally considered ritually impure, is actually pure?

Rav Yochanan says, "She is rendered impure." Meaning, if Elijah did come and declare her purity, we would listen.

But Reish Lakish disagrees. He says, "She is rendered invalid." In his view, even if Elijah made such a declaration, we would not listen.

So, what's the difference? Our Sages explain that "invalid" refers specifically to matters of sanctity. These matters, through this declaration, become disqualified. The term "invalid" stands on its own. Even if Elijah were to proclaim that all those who are ritually impure are now pure because they've been distracted from their impurity, we still wouldn’t accept it.

The key takeaway here is that unless someone possesses the genuine authority to modify or permit even a rabbinical prohibition, we shouldn't listen to them. Authority matters. Legitimacy is paramount. We can't just accept claims without scrutiny, especially when they contradict established laws and traditions.

It really makes you think about the importance of critical thinking and the careful evaluation of sources, doesn't it? It reminds us that faith and tradition require discernment, not blind acceptance. Because, at the end of the day, how do we know what's truly divine and what's just someone's imagination running wild?