Is it more accurate to translate word-for-word, or to translate phrase-by-phrase? Some argue the former, but in truth it isn't possible. Meaning is conveyed primarily by phrases, and words gain their specific meaning in the context of the phrase. So accuracy has more to do with the phrase than the individual words.

People often lump functional equivalent translations like the NIV with natural language translations like the NLT, and then critique the former based on the latter. But these are two distinctly different translation theories and should be kept separate, although obviously they share much in common.

What should a translator do when the actual words don't make sense? Do we let the reader figure out the meaning, or do we help?

"Formal Equivalent Translation" try to translate word-for-word as much as possible, and shift to translating meaning when necessary. This gives the impression of being an "accurate" translation. But the simple fact of the matter is that no translation goes word-for-word in a single verse in the Bible. The nature of language doesn't allow it.

As you get into Greek, you will find that the grammar is not always correct. Sometimes, like in Revelation, the grammar can be explained by the fact that John is in an ecstatic state and the grammar irregularities enhance the message. But even in non-apocalyptic literature, you will find that the grammar rules are not always followed. This should not affect your view of inspiration. All good writers violate grammar, periodically, for effect, or for other reasons.