The lyric given on this site for "Thais" differs in some insignificant details from the one I learned, but that's normal folk variation. However, there's once misspelling that must be corrected: the monk's name is Athanael with AE, not Athaneal with EA. See
https://en.wikipedia.org/wiki/Thais_(opera), where the second paragraph ends with the sentence

The work was first performed in Italy ... with Lina Cavalieri in the title role and Francesco Maria Bonini as Athanaël.

The EA misspelling suggests a mispronunciation as "athaneel", which has only three syllables and messes up the meter. But just as we often spell "Thaïs" in English without the dieresis over the "i", we can write "Athanaël" as "Athanael".