Does that mean that priests typically earn a Master's degree
in seminary, or that they typically earn a Master's
prior to entering the seminary?
I think that this statement gets at the crux of my question.
I can understand how/why it is that learning multiple languages would increase the length of time one spends in seminary, but is it fair to say that many priests lose their ability to speak these languages, assuming that they don't use them--especially Greek, Aramaic, Hebrew--with great frequency "on the job"? I figure that it's like anything else: if you don't use it, you lose it. And it doesn't seem uncommon to hear of priests claiming to be "rusty" in Latin, which makes me suspect that they become "rusty" in others that are used even less frequently.
BTW, I'm not making a negative comment on the fact that priests must learn various foreign languages only to (potentially) forget them; anyone who earns a higher education--secular or religious--winds up having to learn things that s/he will never use and, thus, forgets over time.