Who Jacob Struggled With?

Who Jacob Struggled With?
2007.05.03 2:55

I read this part of Genesis 32:22-32 some year ago and I took it for granted that Jacob wrestled with God and later Jacob started being called Isreal because of this incident since Israel means in Hebrew 'he struggles with God'.
I just wondered why angel instead of God when I found many arts titled 'Jacob Wrestled With Angels'. Was someone interpret it angel from the context? But judging from the later flourishment of Jewish 12 tribes from Jacob, I think it's natural to think the one who fought with Jacob was God.