In the artscroll zemiros book they mention that the Gra and Rav Emden either did not say or modified the shabbat song Shalom Aleichem because there is a stanza which requests that the angels bless us. My question is what is wrong with asking angels to bless us? Yaakov does exactly that when he struggled with the angel of Eisav.
Angels can only do what they're programmed to do, they don't work for us. Hence it's questionable if I have any business asking angels to do anything.
I would assume that if Yaakov is minding his own business and is suddenly attacked by an angel, the angel is now running a program called
As for how Yaakov deduces that the angel has a