There was a time before the familiar classical era Latin in which there were more cases. Yes, even more than the five (or six, or six and a half) that we know. The classical ablative is actually a combination of three of those earlier cases. Understanding those earlier cases can help us sort out the seemingly random mass of ablatve uses.
Sic Transit Gloria Mundi
Sic transit gloria mundi - "So passes the glory of the world." This Latin sentence pops up in all sorts of places. Few people, however, seem aware of where it comes from.
Christian Latin: Ave Regina Caelorum
If you're interested in Medieval or Christian Latin, you might enjoy the post below from the blog Spes in Domino. It briefly discusses both the history of the prayer/hymn Ave Regina Caelorum, and also some specific Latin language aspects. https://spesindomino.org/hail-queen-ave-regina-caelorum/
