Short, very deep thought on Vayeira.
The Medrash says the Malachim, since they revealed the secrets of Hashem (they told Lot of His plan to destroy Sedom) were expelled from the inner sanctum of Hashem. They only returned when Yakov saw them on the Ladder.
Questions : How do Malachim sin? What is the middah k’neged middah here? Why return by the ladder?
Answer:
Malachim can sin if they are exposed to human behaviour.
The Gr”a says that we can’t have malachim like the Bais Yosef did, because our world these days can corrupt Malachim. The Arizal says that is why Hashem had to smite the Mitzrim by Himself. It was too dangerous for a Malach.
A person is supposed to be strong with himself, and soft with others. See first Gaon in Rus for elaberation.
The Sdomim got it reversed. They were cruel to others, yet they were Chatoim, sinners for themselves. What was supposed to be inside (self control) was revealed to others, and vice versa.
A Malach exposed to this can reveal what is inside. His punishment is that the malach who should be inside, is expelled outward.
Yakov epitomized truth, which is putting everything in its right place. In his days, the malachim can return.
The Sdomim got their ultimate punishment, when they got
overturned. What was revealed of them was now buried.