It is known that every word of the Torah is extremely important. So how can it be that the Torah elaborates on the fact that the Matriarch Sarah laughed when she found out that G-d promised her a son? How is it the Torah elaborates on the negativity of our Matriarchs? The Chafetz Chaim explained: It is known that we must learn from our forefathers and Matriarchs. This story is alluding to the footsteps of Moshiach. Directly before the coming of Moshiach there will be great Sages and Torah giants who will hasten the Jewish nation to prepare themselves for Moshiach. It is for this reason the Torah alluded to us that there will be those who will Not be strong in faith and will laugh at the holy people. It is to them that G-d says “Is there something that I am not capable of doing?”
(Sefer Chafetz Chaim)
