But there is a vast difference between knowing about God and personally knowing God. Everyone knows about God, which is why you are without excuse if you reject Him, but only a fraction personally knows Him. The Bible is the foundational truth that teaches the history of the universe, the origin of sin, the reason for death, morality, and so on. Apart from God’s Word, mankind would never learn the all-important message of salvation through our Lord Jesus Christ.Know God’s Will
God’s inspired and inerrant Word was given for many reasons: to teach us, rebuke us, correct us, and instruct us in righteousness; it was also given so that we may be complete and equipped for every good work (2 Timothy 3:16–17). By reading the Bible on a consistent basis, you can find direction for your life and learn how to best serve the Lord who gave His life for you.
-Adopted from Answers in Genesis.org