I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes first for the Jew, then for the Gentile. For in the gospel a righteousness from God is revealed, a righteousness that is by faith from first to last, just as it is written “The righteous will live by faith.”
I'm with LJ on Philippians 4:13 and also 4:19. But I would have to say that the verse I live by, and fail at every day, is Ps 119:11 Thy word have I hidden in my heart that I might not sin against thee.
I don't guess I really have *one* but I also feel pulled to this one:
Matthew 17:20 (King James Version)
20 And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
But the verse that I hold closest to my heart is Genesis 1:1.
I was an athiest. Didn't believe a word in the bible. I could even scientificaly prove parts of the bible false.
Then when God started talking to me, and I didn't know what was going on, my baby brother told me that all I had to do to be a "believer", is believe that one verse. Have "faith". If I could believe just that one little verse, then the rest would be easy. And he was right.