To become great here, even more than your brother Jacob.
When you lived on on Mount Seir, you thought you were elevated and there would be no one to take you down.
..After he began prophesying about the future end of day war, he turns back to tell them what's going to happen in the near future. Enemies will come to plunder while they are out to war and will destroy everything. The enemies are likened to robbers who come in without knowledge of the owner of the house.
It is as if you're asleep. And even more than that, if night bandits come and raise all this noise, how could you not possibly hear and wake up to get them out?!
And he adds on that if robbers come in through the field where there is no oversight because you will not be there when they come, they will leave gleanings because they will worry that the owner will soon return.
וחתו. שיעור הכתוב וחתו גבוריך תימן מקטל, שיפול מורך בלב גבוריו, ועי"כ יכרת איש מהר עשו, כי לא יהיה להם לא עצה ולא גבורה למלחמה:
Cowardice will befall the heart of your warriors...none will remain because there will be no wisdom or heroism in the warriors.
All of this will come to them because of the violence perpetrated by Esav on Jacob as evidenced by all of the destructions that have happened. In the end, you will be defeated in the final destruction forever.
ואל תרא ביום אחיך. לא היה לך לראות ביום צרת אחיך, ואחר כך פירש ביום אחיך זהו ביום נכרו, פי' נכרו שנתנכר מארצו והיה כנכרי שהוציאו ממנה:
You didn't have to stare and watch the painful day of your brother. The explanation of the word necharo is that it was the day he was made foreign from his land.
You opened your mouth large is laughter and other jeers.
ואל. ועכ"פ היה ראוי בל תעמד על הפרק להכרית את הפליטים ועכ"פ שבל תסגר שרידיו אשר שרדו מהם בארצך, בל תסגר עבד אל אדוניו אשר ינצל אליך מעם אדוניו, וגם מרמז ע"מ שעשו להם אחר החורבן שתחלה ראו ברעת ישראל והיו מקטרגים עליהם, ואחר שגברו האדומים והתפשטה אמונתם התחילו לבוז חיל ישראל בכל פעם, ואח"כ התחילו להכרית את הפליטים ע"י הגזירות והגירושין והשמדות, ואח"כ הרגו את האנוסים אשר שרדו בתוכם והסגירו אותם לעוצר ולמשפט לענוים קשים:
...And it also hints about what you did after the destruction. At first, they saw the downfall of Israel and they were denigrating them. When they saw the Edomites winning and their faith increased, they began to desecrate any soldier of Israel. Afterward, they cut down the survivors by way of decree, divorce, and destruction. After that, they killed captives and locked others up for prolonged periods of time.
Then will begin the war of Gog and Magog and the two Messiahs will come along with the seven shepherds who will save Israel. They will come to judge the Mount of Esav and then God's glory will be received by all.