1 Corinthians 1:9

God is faithful (He is reliable, trustworthy and ever true to His promise-He can be depended on), and through Him you were called into fellowship with His Son, Jesus Christ our Lord. 

When we have faith in God, we have faith in His reliability.  The more we experience the faithfulness of God, the more we will step out in trust and knowledge that His word is true.  We all believe in something, whether saint or sinner; however, the God kind of faith overcomes in this world.  Our future depends on what we believe, and so does our direction.