Understanding the Tools we use for bible study

A concordance is a kind of reverse index of all the words in the bible.   You can look up a word and then find all the occourances of it in the bible.   The basic one that has been used for yeasrs is "Strongs Concordance"  with todays electronic aids it is easy to do this with any of the bible sites on the internet.     We use this tool if we are looking for where a subject or word has been used before.