My parish is offering a Greek class, I'm not sure if I should learn a language purely for theological study. Maybe I'd be better learning Spanish.
Greek is like anything else that can be a massive benefit if used properly or can be used to justify all sorts of stupid ideas. If you are willing to use it correctly, I liken it to watching a show on a high definition TV as opposed to a black and white screen. Same picture, but much, much clearer. Anyone, then, who tries to get fundamentally different ideas out of a Greek text should immediately be held suspect. Yes, there are problems in translation, but more often than not, our translators are much, much better at rendering the language in to English (or whatever the receptor language is) than those who took it even for a few years in seminary. They definitely
know it better than some guy who looked up a word in Strong's concordance using the number system and can now tell you what the word "really" means. *shudder*
But, again, I found it to be one of the best things I ever did. The Bible is just better
in its own tongues. You can hear the author's voices so much more clearly. I like what Bruce Metzger said . . . reading the Bible in English is like kissing your wife through a veil.
So, yeah, if you have a chance to take it, I would highly recommend it. But please know up front from the very first day that such knowledge isn't going to help you discover secret nuances that others have missed through church history. That just won't happen. The vast, vast, vast majority of the time, you aren't going to prove your English translation wrong. You won't see the "real" meaning of the text. Rather, you'll come to see a lot more clearly the emphases of the text, the logical connections and the flow of thought, and you'll see why certain translators opted for certain translations at different points. You'll come to see various translations as commentaries. And you'll have the added benefit of being able to use and read real exegetical tools and works rather than relying on Strong's or some other popular equivalent. But if that's not enough for you, if you think taking it is going to let you answer the great mysteries, don't waste your time. You're far more likely to get yourself in trouble than you are to find any sort of meaningful illumination.