The Bible is inspired by God which makes it an amazing book. "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: that the man of God may be perfect, throughly furnished unto all good works" (II Tim. 3:16,17). No other book can compare with this book or claim for itself what this book does.
God told Joshua, when he took the place of Moses, to operate by the Bible. If all believers would do what he did, they would live successful Christian lives. He said, "This book of the law shall not depart out of thy mouth: but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success" (Josh. 1:8). The two things Joshua must do and all believers in Christ must do if they would be a success for Him are (1) meditate in it, and (2) observe to do according to all that is written therein.