Matthew Henry's famous commentary successfully combines practical application, devotional insight, and scholarship on the entire Bible, offering insights on the content, message and nature of God's divine revelation. It's an amazing work for a man who didn't have access to Bible software—simple is some instances but profound in others—and has been around for almost 300 years.
The commentary is normally available in a six volume set, and is also part of many Bible study software programs. This is the only complete and unabridged one-volume edition. Please note that while $30 is a great price for the material, as far as readability goes, you get what you pay for! If you already struggle with words swimming on a page, go another route!