2 Peter 1:3

According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that called us to glory and virtue.  

When we increase our knowledge of the ways of God, we grow in trust and faith.  The bible is like an instruction manual for our lives.  It gives us examples of how not to live and how we should behave.  The more we know, the better we can get over the pitfalls that try to come into our lives.