What's the Angel of the Lord?

Moses focuses on not the line of promise for a bit, he zooms in on Hagar's story. Who is the angel of the Lord? And is this a covenant with Hagar and her offspring Ishmael? I think Sarah's barrenness is an outworking of that word of judgment. So here we have a barren woman and she's going to have this surrogate child. He's given a name that means God hears. Well, later in the Bible, we're going to have another polygamy situation with Alimaleq, who's married to Hannah and Panina. His name will be Shamu Ale. It seems to me that the author of Samuel wants us to