Because of Him

 "I believe in Christianity as I believe that the sun has risen: not only because I see it, but because by it I see everything else." ~ C. S. Lewis

Because: 

"To lay hold of and receive the gospel by a true and saving faith [it] is an act of the soul that has been made a new creature, which is the workmanship of God... Wherefore whoever receiveth the grace that is tendered in the gospel, they must be quickened by the power of God, their eyes must be opened, their understandings illuminated, their ears unstopped, their hearts circumcised, their wills also rectified, and the Son of God revealed in them." ~ John Bunyan

So know that: 

 "...by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast." - Ephesians 2:8-9

therefore always: 

"Trust the past to the mercy of God, the present to His love, and the future to His providence." ~ Saint Augustine