apikoros

heretic, non-believer, especially one with great knowledge of Judaism

Aramaic

Judeo-Aramaic, a northern Semitic language related to Hebrew.

duchen

A ritual where the kohanim recite the Priestly Blessing (Num. 6:24-26), blessing the rest of the congregation.

halevai

"Would that it be so" (Steinmetz, Yiddish and English)

I wish!

If only