In the Bible, Matthew 24:35, reads:
"Rachaidh neamh agus talamh as, ach ní rachaidh mo bhriathrasa as." (Revised Standard Version)

Is "sa" a preposition? Can you explain, using this example the grammar of the prepositions at the end of sentences? How does this sentence read then?
Thank you.
Donal

It is not a preposition here. It is an emphatic particle. Just as "mé" becomes "mise" when emphasised and "tú" becomes "tusa" so "mo bhriathar" (my word) becomes "mo bhriatharsa" (MY word).

In English, the written word has no emphatic accomodation such as the sa or se suffix unless the writer chooses to italicize, capitalize, or underscore certain words:

Heaven and Earth shall (go) pass away, but my WORDS shall not (go) pass away.

Then the reader knows to vocally emphasize WORDS.

Ceist: Does the spoken Irish vocally inflect bhriathrasa, or is it spoken without emphasis?

quote:

but my WORDS shall not (go) pass away.

I'd say: but MY words shall not (go) pass away.
(Emphasis is on "mo ... -sa" rather than on "briathra")

quote:

or is it spoken without emphasis?

Yes, "mo bhriathrasa" without any further spoken emphasis.

Lars