While in my Video Study thread I provided the most popular understanding of the identity of the angel with whom Jacob wrestled with it should be noted that, as with most of Jewish understanding, there are differences of opinion.
Here are some sources which explain different understandings of the identity of this angel (or was he a man?)...
http://asbee.net/vayishlachangel.htmBackground: After Jacob stole the blessing of Esav, he ran off to his uncle Laban to find refuge from an angry brother and to marry. At Laban's house, Jacob has 12 children and acquires much wealth. After 20 years there, G-d appeared to him and reminded him of his vow to give one tenth of his wealth to G-d and to establish a house of G-d in Canaan. Jacob then ran away from Laban, and on his way home, he encountered a camp of angels. He sends greetings to Esav. The returning messengers report that Esav is on his way to encounter Jacob with 400 men. Imagining the worst, Jacob prepares to appease his brother by sending an elaborate gift (incl. tens of cows and goats). As Jacob is moving his family, he finds himself alone at a river, fighting a mysterious man-angel.
Genesis, chapter 32, verses 25-33:
Jacob remained alone, and a man strugled with him until the break of dawn. When he saw that he could not defeat him, he reached for the socket of Jacob's hip, so that the socket of Jacob's hip was strained as he wrestled with him. Then he said, "Let me go, for dawn is breaking."...bless me...not Jacob but Yisrael will be your name for you have fought with G-d and angels and prevailed...What is your name... Why
should you ask..and he blessed him there.
1. What was the meaning of his encounter?
2. Who was the assailant?
3. Why did he attack?
4. What's the significance of his name change and blessing?
5. How does this fit into the context of the story?
Spiritual
Midrash: The spirit of Esav came and caused spiritual injury among some of the progeny of Yaakov. Who were they? The generations who were forcibly converted.
Yalqut Shim'oni (12th cent. Provencal anthology of midrash): The angel was Michael, trying to convince Yaakov of his own strength. He blessed him and said, "May your children be as righteous as you."
Rashi (11th cent. French commentator): Jacob forced the angel of Esav to agree to the blessings of Isaac.
Rashbam (12th cent. grandson of Rashi): Jacob tried to run away from Esav. An angel stopped him and punished him because he should have trusted in G-d's promise to bring him home safely.
Hizkuni (13th cent.): The angel came to reassure him. He was punished, however. for fearing Esav.
Rabbi David Kimkhi (13th cent. Provencal grammmarian): No one will be able to hurt Jacob except for the rape of Dinah.
Nahmanides (13th cent. Spanish commentator): The angel told him not to pray to him ("you don't need my name in order to invoke it"), but only to G-d.
Maimonides: It was a dream.
Rabbi Elimelekh (early Hasidic Rabbi): 1)The angel attacked his sins(the dust). As Ya'akob struggled with his sins the dust went up to the heavens, as he was forgiven.
Keli Yakar (Polish 16th cent. commentator): The evil inclination came to take advantage of Jacob's moral weakness; his newly acquired interest in sheep and wealth. He tried to blind him from his ability to see the
mysteries of life.
R. Levi Yitzkhak of Berditchov (19th cent. hasidic Rabbi): 1)Faith is the lower body. The upper body is understanding. On the basis of pure faith, Jacob is vulnerable unless it is bolstered by understanding. 2)
Jacob's encounters with humans are also encounters with G-d.
Daniel J. Elazar (contemporary political scientist): The people Israel are represented by this episode: a person struggling with G-d. We are not called "Abraham" or "Isaac" who submitted wholeheartedly to G-d.
Political, Personal
Midrash: This story is symbolic of our ability to prevail over our enemies. If we can defeat their heavenly emissary, we can certainly defeat them on earth.
Beit Halevy (19th cent. Lithuanian commentary by Rabbi Soloveitchik, based on Zohar mysticism) The enemy confronts us all night and will not relent until the full dawn, ie. in diaspora there can be small victories and salvations, but complete peace won't come until the full dawning of the light of Messiah.
Benno Jacob ( early 20th cent. German Bible scholar): G-d brought this about so that when Esav sees his brother, burdened with a large family and limping most pathetically, he would have mercy and forgive him.
Rabbi Yoseph Bekhor Shor ( French, 13th cent. Talmudist, exegete): An angel wished to hurt Jacob. G-d didn't let him.
Rabbi Naftali Zebi Yehudah Berlin (18th cent. Russian Talmudist): Jacob needn't be underhanded anymore. He is now capable of true victory. The angel said to him, "you needn't know my name to invoke it when you are in trouble. I will bless you so that you won't need that."