Deuteronomy 31:6

Be strong and of good courage, do not fear nor be afraid of them; for the Lord your God, He is the One who goes with you.  He will not leave you nor forsake you.

Sometimes we underestimate the power of God and what He can do on our behalf.  Since we can only see what goes on in this realm, we cannot see God working on our behalf.  We also cannot see God walking with us as we go. If we pictured that every day our confidence would skyrocket in the word and its promises.  We would see our prayers going out and the answers coming back, and we would not doubt.