Sforno on Genesis 32:30/ספורנו על בראשית ל״ב:ל׳

1הגידה נא שמך, which would describe your essence, your function, and how you would go about performing same. This would enable me to understand why you attacked me in the first place. I would then be able to do penitence for my sin, something I cannot do as long as I do not know what precisely my sin consists of.

2?למה זה תשאל לשמי, our (angels) format does not in any way correspond and shed light on the level of our intelligence which cannot be explained in terms of language used by human beings. The angel confronting Manoach in Judges 13,18 summed this up in the single word: “פלאי,” it is concealed, [because it would only be misunderstood if put into words. Ed.] The angel’s activity reflects G’d’s will at the time. [Clearly, this implies that most angels perform their tasks ad hoc. Ed.]