These are some of my favorite quotes from Facing the Giants:

"Never back down, never give up, never lose faith"

Dad: "David, I asked God since you were little that He'll show how strong He is in your life and through you people would see how good He is."
David: "Then why would He make me so small and weak?"
Dad: "To show how mighty He is."

"For the rest of your life, you will remember today. I want you to remember that you held nothing back, you did not lose heart, you did not stop fighting, YOU DID NOT QUIT!"

"I'm preparing for rain"

"David, do you think God can help you to make this kick? Do you really believe it? Wheter you make this field goal or not, we're going to praise Him. But don't you walk off this field having to be less than your best."