On Shabbos Parshas Shmos in 5755 – 1995, when the word לִ֔י was missing entirely from Moshe’s words to Hashem: וְהֵן֙ לֹא־יַֽאֲמִ֣ינוּ לִ֔י. In that possuk, Moshe is expressing his concern that the enslaved Jewish people may not believe he as sent by Hashem to redeem them.

The general feeling among those in 770 at the time, as described by a bochur in his diary, was that this was a direct message for the Chassidim to strengthen their emunah in the Rebbe’s words concerning the imminent Geula.

The chassidim were shaken by this event, and the Crown Heights Beis Din called an emergency meeting on Motzei Shabbos for the entire community, where rabbonim and mashpi’im spoke of the need to strengthen their emunah.

To read more: https://anash.org/what-the-rebbe-said-when-a-torah-was-found-to-be-possul/