A concordance is an alphabetical list of the principal words used in a book or body of work, with their immediate contexts.
A topical concordance is a list of subjects that a book (usually The Bible) covers, with the immediate context of the coverage of those subjects. Unlike a traditional concordance, the indexed word does not have to appear in the verse. The most well known topical concordance is Nave's Topical Bible.
The first concordance, to the Vulgate Bible, was compiled by Hugh of St Cher (d.1262), who employed 500 monks to assist him. The first concordance to the English bible was published in 1550 by Mr Marbeck, according to Cruden it did not employ the verse numbers devised by Robert Stephens in 1545 but "the pretty large concordance" of Mr Cotton did. Then followed Cruden's Concordance and Strong's Concordance.
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