Hebrews. It is just so beautifully written as the roll call of faith.
"Faith is the substance of things hoped for, the evidence of things not seen."
"By faith Sarah herself also received strength to conceive seed, and she bore a child when she was past the age, because she judged Him faithful who had promised."
"Since we are surrounded by so great a cloud of witnesses, let us lay aside every weight, and the sin which so easily ensnares us, and let us run with endurance the race that is set before us, looking unto Jesus, the author and finisher of our faith."