Why Do We Fast After the Festival?

BELOW IS A SUMMARY OF TOPICS FROM THE DAILY SHIUR OF MOREINU HARAV ELIEZER BERLAND SHLIT”A FROM SUNDAY, THE NIGHT OF 5 CHESHVAN 5786, PARASHAT LECH-LECHA, AFTER MAARIV:

1. Yiftach’s daughter was an only child
2. Adah and Tzila, the wives of Lemech, wanted a get (divorce document). Everyone needs to learn Rashi on Adah and Tzila.
3. Yaakov Avinu was “concealed” with Shem and Ever. The intention is that he was hidden there, and since he didn’t have any book, he only prayed for 14 years.  He said Likutey Tefillot all day long.
4. Now the nights are long. Everyone should go to do hitbodedut at chatzot (halachic midnight).
5. Every girl needs to know how to learn Likutey Halachot.
6. Rabbi Natan asks how the Mishnah Berurah writes, “Perhaps they rejoiced too much,” and therefore we fast on Bahab (Monday-Thursday-Monday). Can one really sin from joy?  But really, one needs to fast because they didn’t rejoice enough.
7. Eliphaz took Yaakov’s clothes. Naftali arrived – “a sent hind” – and brought Yaakov new clothes.  Eliphaz also took these.  Yaakov was left with nothing on the banks of the Jordan.  In the end, a horseman arrived and left the clothes on the banks of the Jordan, and he received his clothes from there.
8. Yaakov heard that Esav was pursuing him since he left his hiding place with Shem and Ever. Therefore, he went to Lavan, because Lavan was searching for Esav in order to kill him and make him into Terafim, because he was a firstborn.
9. Because Yaakov bowed down to Esav seven times, Esav lives to this day. If he hadn’t bowed down, Esav would have died.
10. Rav Acha bar Yaakov, who decapitated the seven-headed serpent, rectified the seven prostrations of Yaakov to Esav.
11. All the boys should learn another two hours Chatzot. Everyone should learn with their wives Likutey Halachot.