justified
peace
grace
glory
hope
ungodly
righteous
reconciled
Bible Gateway (read the passage in different translations)
(Also: you can check on where key words appear elsewhere in Scripture...)
Biblehub Interlinear (find the Greek words and get a definition)
Matthew Henry (old but fabulous commentary)
Baker's Evangelical Dictionary (check out facts, names, places, word meanings)
Vincent's Word Studies - old but reliable - goes through each verse picking out key words
Robertson's Word Pictures - tough and very grammar-obsessed but try it any way - it's brilliant
William Barclay's Daily Study Bible - lots of little stories and unexpected facts - wonderful stuff
David Guzik commentary - helpful verse-by-verse explanations