1 Peter 1:9 receiving the end of your faith, even the salvation of your souls.
This is one of those verses that brings it all back together for me. I keep my faith so that I can know my soul is saved eternally.
When someone asks me why I believe in God I tell them that it is the truth and better than any theory man can make up. When someone asks me why I have such faith it is because I have learned to trust in Christ for everything.
This does not mean I get it right all the time and neither that I am perfect in any way; just that I firmly believe that Christ has saved me eternally. That is the end of my faith!