2 Timothy 3:16,17 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.
The Bible isn’t simply a book of religious ideas or good moral advice. It’s the very Word of God, able to establish us in Him because it is inspired byHim.
It's been said that doctrine tells us what is right, reproof tells us what is not right, correction tells us how to get right, and instruction tells us how to stay right.
God’s Word is food to nourish us, light to guide us, and a weapon to defend us. A working knowledge of the Bible is essential for spiritual growth.
One reason God has established local churches is that believers might grow in the Word and, in turn, help others to grow.