Midrash su Genesi 16:10

"And an angel of God found her by a spring of water..." by the path of the armed one(?). "and said: Hagar, slave of Sarai," a parable: he said, if one person says "your ears are those of an ass" do not worry, two make for you canopies. "So Avram said: behold, your slave is in your hand,... and the angel said: Hagar, slave of Sarai... And she said, I am fleeing because of Sarai my mistress,... and the angel said to her, return to your mistress and be oppressed... and the angel said to her, God has greatly increased..." how many angels were paired with her? Rabbi Yosei son of Chanina said, five: in every place where it says, "said", a new angel. The rabbis say, four, in every place where it says "angel". Rabbi Chiya says, come and see how many are between the first ones and the last ones. Manoach said to his wife, "we will surely die, for we have seen God" (Shoftim 13:22), and Hagar slave of Sarai saw five angels one after the other and was not afread of them. Rabbi Chiya said, the fingernails of the parents and not the bellies of the children. Rabbi Yitzchak says, she searches the ways of her house (Mishlei 31:27), the children of Avraham our father's house were searching, and she was accustomed to see them.