For anyone curious:

> Epiousios (ἐπιούσιος) is a Greek adjective used in the Lord's Prayer verse "Τὸν ἄρτον ἡμῶν τὸν ἐπιούσιον δὸς ἡμῖν σήμερον"[a] 'Give us today our epiousion bread'. Because the word is used nowhere else, its meaning is unclear. It is traditionally translated as "daily", but most modern scholars reject that interpretation.

* https://en.wikipedia.org/wiki/Epiousios

* https://en.wikipedia.org/wiki/Hapax_legomenon

Whenever I start diving into theology on Wikipedia, I'm always struck by the similarity of Bible study to the effort put into Wikis about Lord of the Rings, Star Wars, etc.

Basically, early Christians were fanboys obsessed with the minutia and canonical stories of their favorite fantasy series published in two volumes. (Amusingly, it seems that L. Ron Hubbard noticed the same thing years ago and thought, "Hey, I can do that...")

https://youtu.be/IOPd80FN2ew you might really enjoy the lectures of Bart Ehrman.

A hapax legomenon, one of my favorite literary terms.

Much better than "Googlewhack" for sure.

A word or form that occurs only once in the recorded corpus of a given language.

* A word that occurs only once in a given corpus. For example, if you list all the words in a book, it can have many hapax. That usually says something about the diversity of words an author uses. A hapax that is unique to all records of a language is quite rare.

> A hapax that is unique to all records of a language is quite rare.

Depends on how well attested the language is. In Koine Greek I would imagine they’re relatively rare, but in Etruscan or Epic Greek much more common.