From what I’ve read, the general consensus is that most people in the world will become Noahides, a 3rd temple will be built, and world peace achieved, Simple! But there doesn’t seem to much question regarding what will happen to all the other religions of Earth, it gets fuzzy. To quote 2 different sources regarding other religions during the Messianic Era:
“Once the Mashiach comes and the rest of the world acknowledges the supremacy of the Torah, it means that other religions cannot exist as they all violate the Torah.”
“They must follow the Noachide laws, but most modern religions already do that. So I don’t think it’s inconsistent with Jewish teaching to believe that there will be other religions during the Messianic era.”
So, any thoughts or guesses from here if there will be other religions during The Messianic Era?