God's Positioning System ( GPS ) is the written Word of God. Psalm 119 is the largest single portion of the Bible, and it's theme is the importance of Scripture. Here are a few examples: " Thy Word is a lamp unto my feet and a light unto my path " ( v.105 ). " The entrance of thy words giveth light..." ( v.130a ). " Order my steps in thy Word " ( v. 133 ). The Word of God is what Jesus used in His wilderness temptation to defeat Satan. It is also the offensive weapon provided for us in the Armor of God. The Bible is our most accurate point of reference and is accurate 100% of the time.