A Bible commentary is a written, systematic series of explanations and interpretations of Scripture.
Commentaries often analyse or expound on individual books of the Bible, chapter by chapter and verse by verse. Some commentary works provide analysis of the whole of Scripture. The earliest Bible commentaries contained narratives or historical accounts of the Scriptures.
Through a personal narrative, Bible commentaries provide deeper understanding and insight into the Bible, and can be used to assist both casual readers of the Bible and those who pursue serious study.
Bible commentaries are typically organized passage by passage (book, chapter, and verse) through the Bible. This system of analysis is called “versification” of the biblical text. Commentaries are meant to be used alongside the Bible text to offer deeper insight, explanation, illustration, and historical background. Some commentaries also feature detailed introductions to the books of the Bible.