To be fair, there are nuances in the ancient Greek which are best brought out by some study of the language. The most frequently translated ancient Greek text(s) would be the New Testament, and even there you can see a lot of modern churches base their ideas on dubious translations.

I find ancient Greek not so helpful when it comes to etymologies. Some are helpful, but many are obscure or misleading. Climax comes from the word for a ladder apparently, and electron comes from the word for amber. There are stories behind both but they won't get you far. Any word beginning with psych- tends to relate to the mind, but the Greek means "soul".