What was the significance of the angels who came to meet him?
Rashi: They were the angels of Eretz Yisrael, who came to accompany him into Eretz Yisrael. 1
Ramban: They came to show Yakov as he approached the territory of his enemy (Esav), that his forces were superior to those of Esav. 2
Rashbam: They came to protect him. 3
Bechor Shor: They came for his honor.
Malbim: Now that he separated from Lavan, he reached a great level and saw angels while awake, like Avraham.
Refer to 28:12:1:1. The Ramban queries Rashi, inasmuch as Yakov was still far from Eretz Yisrael. Quoting the Ra'am, R. Chavel in his notes, explains that the Ramban follows his opinion 35:18), that Charan is south-east of Eretz Yisrael, whereas Rashi there maintains that it is north-east. Oznayim la'Torah (32:4) - Moshav Zekenim (32:5) says that Edom was already considered like Eretz Yisrael, because in the future it will be. The same applies to Amon and Mo'av, which is where Yakov was, therefore angels of Eretz Yisrael came to him now. Harchev Davar (verse 3) says that Machanayim is in Eretz Yisrael, and brings many supports for Rashi.
In keeping with the promise that Hashem had made with him on his way to Lavan (See above, 29:15)
Why does it say "Va'Yifge'u Vo"?
Ohr ha'Chayim: They appeared suddenly, so Yakov knew that they are angels,