Inside of some Christians unbeknownst to their family, friends or the church, they are screaming, "I doubt, I doubt, I have very grave doubts!" Ours is an age of doubt. Skepticism has become fashionable. We are urged to question everything: especially the existence of God and the truthfulness of his Word, the Bible. The half-brother of Jesus warned us against harmful, excessive doubting: "the one who doubts is like a wave of the sea that is driven and tossed by the wind." (Jam. 1:6) When insidious doubts begin to creep into our mind and the heart, it is only a matter of time before we have a crisis of faith that can give way spiritual shipwreck. Since we have been warned, "Some will fall away from the faith," we should be ready "to save some," and yes, even ourselves. This one-source, how-to-grow-your-faith guidebook will equip Christians to help them grow spiritually stronger.