ooh, ok!!! folklorist here, let me try to add some context!
Cassiel, in Christian Extracanonical/Esoteric, Kabbalistic and Islamic lore, is (among so many other depressingly accurate things) the Archangel over Saturn (yes Cas was an archangel. yes he just did not tell them. seeing the other archangels, I can't blame him).
Saturn, if you're familiar with Roman myth, is roughly equivalent to Chronos/Kronos. However, Rome took some liberties with him and incorporated their own gods/beliefs, which in turn became more abstracted and metaphorical as the aspects of Saturn shifted from association with a god to association with a planetary/celestial/hermetic intelligence.
k? following? cool. (late medieval/early modern roman-based-alchemy-pretending-to-be-christian is SO wild. same period to produce the Enochian script and language)
Saturn's positive aspects include: temperance, age/maturity, self-control, wealth, deep thought and contemplation, calm, and Time.
however, the flip side of these aspects (the more negative ones being heavily associated with Saturn the god/titan, but not Saturn in any Abrahamic-religion sense) include: oppression, tyranny, greed/unending hunger, and a fear of death/need to harm or overpower others to prevent "time running out". (I will fact check all this bc its not my main area of study, but I tHINK im getting it right. I think. ...hopefully)
think Saturnalia, Lord of Misrule, Saturn Devouring His Son, but also Saturn as the ruler of a Golden Age of man, as Father Time, as the Old Man symbolizing the past year on New Years' cards, etc.
...anyway I guess what I'm getting at here is its not Jimmy. its Cas. Castiel is what Saturn's aspect looks like at its MOST Modern-American Christian, Holy, Sinless, Restrained etc.
otherwise known as a Ticking Fucking Time Bomb of hedonistic, hungry, strangely mortal energy, that absolutely makes any and all deities/angels/demons/entities/etc that come into contact with it (even indirectly) Act The Fuck Up
tldr just remember that one of the only other remnants of Saturn in Christian Practices is the Lord of Misrule. that potential is always there.