A biblical concordance is an alphabetical list of all the words in the Bible. It can be used to locate a known biblical passage or to learn how a particular word is used in the Scriptures.
Each Bible version or translation has its own concordance. If you are using the New Revised Standard Version (NRSV) translation then you should use a concordance to the NRSV; if you are using the New American Bible Revised Edition (NABRE) then you should use a concordance to the NABRE.
Watch the following short video to learn more about how to use a concordance.