http://revach.net/article.php?id=3161

Section: Galus & Geula   Category: Galus
Rav Shlomo Volbe: From Jail To The Palace, In The Blink Of An Eye
Yosef was in jail for twelve years, including the last two because he placed his faith in the Sar HaMashkim.  When his gezeira ended, it happened in a heartbeat.  "Vayiritzuhu Min HaBor", they ran him our of the pit (Mikeitz 41:14).  Yosef was taken out so quickly that they barely had time to bathe and groom him.  The Sforno says this is the typical of Yeshuas Hashem that happens in a flash, like the pasuk says "Ki Krova Yeshu'asi Lavo", my salvation is near in coming (Yeshaya 56:1).  That's how it was in Mitzrayim and that's how it will be when Moshiach comes, "K'heref Ayin", in the blink of an eye.

Rav Volbe says that this is how the Ba'al HaTanya describes the geula.  He said he will be sitting in his study learning torah and he will hear a commotion from outside.  The people will be talking about the special midday edition of the newspaper that came out to report the coming of Moshiach.  Similarly, Rav Chaim Volozhiner said his wife will burst into his study disrupting his learning and say, "Chaim, why are you just sitting in front of your gemara, Moshiach has arrived!"

Two thousand years of bitter galus will end just like that.  No matter what our troubles are, no matter how deep we seem to be and how far the light seems from us, we need not worry.  Ki Krova Yeshu'asi Lavo, when the time comes it doesn't take more that a second for it to happen!  Leave it Hashem, He knows what He is doing and... he can work fast.