I love the notes on the Hebrew and Greek roots of words you sometimes see in the footnotes of the LDS edition of the Bible. Where those have been included, they almost always add clarity to the meaning of a difficult passage, and I often wished there was more of them.
Then I discovered Strong's Concordance.
What they've done with Strong's Concordance is made an index. Of every single word in the entire Bible. And then cross-referenced each and every word with the Greek or Hebrew word it was translated from. So any word that puzzles you, you can trace back into Hebrew for the Old Testament, or Greek for the New Testament, look at its definition and entomology, and see what else it was translated as, and where else it was used.
My oldest and I are reading through a chronological edition of the King James (another magical invention - I'm absolutely loving having it arranged chronologically, rather than the traditional order) and recently we were reading the 28th Psalm: