The best thing about a study Bible is that enables a person to have ready access to help understanding the Bible. Most study Bibles try to address the major questions people have when reading Scripture. Historically one of the greatest ways to study the Bible is to purchase individual commentaries for whatever book of the Bible you are currently studying (provided you choose a reputable and trustworthy scholar). Obviously this can become very expensive, not to mention inconvenient in terms of storage and mobility. A good study Bible provides you with excellent commentary in a convenient, mobile, and handy package: one bound book.