The NIV Rainbow Study Bible has a unique color-coding system that allows readers to quickly and easily identify twelve major themes of Scripture throughout the text: God, discipleship, love, faith, sin, evil, salvation, family, outreach, commandments, history, and prophecy. The system also underlines all words directly spoken by God, Jesus, and the Holy Spirit. Other features of this Bible include 12 pages of color maps with index, a Bible reading calendar, concordance, subject guide, Where to Find It, Outline of Old Testament History, "Know What God Says," Table of Weights and Measures, "100 Popular Bible Passages," and "365 Popular Bible Quotations for Memorization and Meditation. " The No. 1 fully color-coded Bible with more than 3 million combined units sold! Show Less