Face like a Flint.

Isaiah 50:7-
“ For the Lord GOD will help Me;
      Therefore I will not be disgraced;
      Therefore I have set My face like a flint,
      And I know that I will not be ashamed."

Why am I so quick to lose courage?  When God gives me guidance, why can't I seem to stand up for it?  Deep down, I know I have this confidence and trust in Christ.  Yet, I am so quick to be shaken, to waver.

Give me the strength, to trust what You say.  
That you're good, and your love is great.
I'm broken inside, I give you my life...
I may be weak, but your spirit's strong in me.
My flesh may fail, but my God you never will.