It also lets the reader directly compare how the same word may be used elsewhere in the Bible.
For example, αγαπησεις is assigned the same number as αγαπατε – both are listed as Greek word #25 in Strong's Concordance (αγαπαω).
Due to Strong's numbers it became possible to translate concordances from one language into another.
He mentions Gesenius and Fürst as examples of the lexicons that Strong's is drawn from.
His dictionaries were meant to give students a quick and simple way to look up words and have a general idea of their meaning.