We've all heard our fair share of faith messages. We walk by faith. We speak by faith. We live by faith. We prophesy according to our faith. We inherit the promises of God through faith (and patience). You've probably memorized all those Scriptures, too.
We've all marveled at the heroes in the Hebrews 11 "Hall of Faith." There we are edified by accounts of God's faithfulness to His people throughout the Old Testament. There we learn the practical elements of how faith works in the New Testament. Your Bible is probably colored and underlined on those pages just like mine.
Indeed, we've all learned that faith comes by hearing the Word of God. We are convinced that acting on the Word brings results (see Rom. 10:17). We know (that we know that we know) that if we don't doubt in our heart but believe those things that we say will come to pass we will surely have whatsoever we say (see Mark 11:23). We've learned well.
Ultimately, whatever we receive from God, it comes by faith. I'm oversimplifying, but that's the anatomy of faith in a nutshell. Now what about the other side of the coin?